subject:(OpenFOAM)

Delft University of Technology

1. Op het Veld, R.H.T.H. (author). Temperature distribution of shallow water FLNG cooling water outfalls.

Degree: 2014, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:b9821d4e-2a22-4fec-9013-dd58ca73176b

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FLNG cooling water outfalls can be characterized as high momentum buoyant jets, relatively close to the surface. The buoyant jet trajectories, spreading rates and surface… (more)

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FLNG cooling water outfalls can be characterized as high momentum buoyant jets, relatively close to the surface. The buoyant jet trajectories, spreading rates and surface distribution very much depend on the jet outflow characteristics. A study with the CFD software OpenFOAM has been carried out into the mixing and transport processes of buoyant jets. It is shown that OpenFOAM can be used to model the three dimensional trajectories of buoyant jets and their far-field buoyant plume distribution. Two dominant mixing processes are the result of the high initial jet momentum. First, the high momentum jet results in large turbulent jet entrainment rates. Second, the relatively shallow high momentum jets result in large horizontal surface currents. These currents horizontally advect the buoyant plume into the far-field and result in steep vertical velocity gradients, which induce vertical mixing of the buoyant plume. The momentum length scale, Lm proves to be an important parameter to characterize buoyant jets. The momentum length scale represents a distance along the jet trajectory, where buoyancy effects become dominant over initial jet momentum. For these jet characteristics it is found that the dimensionless surface temperature rise follows a logistic distribution function to the momentum length scale, after the point of surface impingement. The relative surface temperature results become constant for increasing values of the momentum length scale. This is the result of increased mixing by the jet turbulent entrainment and steep vertical velocity gradient. From the logistic distribution an empirical relation is found which can accurately predict the surface temperature rise as a function of the outfall velocity, outfall diameter, outfall temperature, outfall angle and distance from the jet orifice. The outfall depth appears to have no significant influence on the surface temperature rise for the conditions used in this study. The empirical equation proves to give reliable results for distances larger than 1.5 times the value of the momentum length scale and jet submergence smaller than 7.5 times the jet diameter. The robustness of the equation is also tested for extreme value outfall scenarios. The equation overestimates the temperature rise for small outflow diameters, combined with high initial jet temperatures. For other considered extreme values, the equation proves to give reliable results. Moreover, it is also demonstrated that the standard k-epsilon turbulence closure can be successfully used to model the buoyant jet centerline velocities, jet trajectories, spreading rates and centerline dilution rates of a round turbulent buoyant jet.

Hydraulic Engineering

Civil Engineering and Geosciences

Advisors/Committee Members: Pietrzak, J.D. (mentor), Zijlema, M. (mentor), Zitman, T.J. (mentor).

Subjects/Keywords: OpenFOAM

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Op het Veld, R. H. T. H. (. (2014). Temperature distribution of shallow water FLNG cooling water outfalls. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:b9821d4e-2a22-4fec-9013-dd58ca73176b

Chicago Manual of Style (16^th Edition):

Op het Veld, R H T H (author). “Temperature distribution of shallow water FLNG cooling water outfalls.” 2014. Masters Thesis, Delft University of Technology. Accessed April 22, 2021. http://resolver.tudelft.nl/uuid:b9821d4e-2a22-4fec-9013-dd58ca73176b.

MLA Handbook (7^th Edition):

Op het Veld, R H T H (author). “Temperature distribution of shallow water FLNG cooling water outfalls.” 2014. Web. 22 Apr 2021.

Vancouver:

Op het Veld RHTH(. Temperature distribution of shallow water FLNG cooling water outfalls. [Internet] [Masters thesis]. Delft University of Technology; 2014. [cited 2021 Apr 22]. Available from: http://resolver.tudelft.nl/uuid:b9821d4e-2a22-4fec-9013-dd58ca73176b.

Council of Science Editors:

Op het Veld RHTH(. Temperature distribution of shallow water FLNG cooling water outfalls. [Masters Thesis]. Delft University of Technology; 2014. Available from: http://resolver.tudelft.nl/uuid:b9821d4e-2a22-4fec-9013-dd58ca73176b

2. Riahi, Hamza. Développement d’une méthode des frontières immergées pour l’analyse et le contrôle des écoulements compressibles : Development of an Immersed Boundary Method for the Analysis and Control of Compressible Flows.

Degree: Docteur es, Energétique, thermique, combustion, 2018, Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique

URL: http://www.theses.fr/2018ESMA0015

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Cette thèse s'inscrit dans le contexte de la simulation numérique et l'analyse des écoulements compressibles, notamment en géométrie complexe ou mobile. Dans ces situations, la… (more)

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Cette thèse s'inscrit dans le contexte de la simulation numérique et l'analyse des écoulements compressibles, notamment en géométrie complexe ou mobile. Dans ces situations, la mise en place d'un maillage représentant correctement lesolide sans perte de précision des méthodes de discrétisation s'avère difficile. Une alternative est de travailler en maillage cartésien quelque que soit la géométrie du domaine d'écoulement en introduisant une approche aux frontières immergées.Dans ce contexte, on propose une amélioration et extension d'une méthode formulée pour la simulation des écoulements incompressibles. Les deux principales caractéristiques du modèle proposé sont d'une part l'intégration d'un nouveau terme de forçage des vitesses qui prend en compte les effets de pression et d'autre part l'intégration d'un nouveau terme de correction de température dans le traitement de l'équation de l'énergie.Cette méthode a été intégrée dans deux solveurs compressibles du code OpenFOAM : SonicFOAM et RhoCentralFOAM. La validation a été effectuée en considérant différents cas de complexité croissante sur des corps 2Dfixes et mobiles, pour lesquels on a fait varier les nombres de Mach et de Reynolds. De plus, des cas mettant en jeu des transferts de chaleur pariétaux ont été étudiés. Les résultats ont été comparés à un grand nombre de données numériques et expérimentales issues de la littérature.Enfin, des études sur des configurations plus complexes tridimensionnelles ont été mises en place. Les bifurcations de régime d'écoulement de la sphère ont été investiguées quand le nombre de Mach augmente. Une sphère avec des parois non-adiabatiques a été également analysée. Une géométrie réaliste de drone a été simulée en régime compressible.Ces analyses mettent en évidence de nombreuses caractéristiques favorables de la méthode des frontières immergées en termes de précision, de flexibilité et de coût de calcul.

This thesis is related to the numerical simulation and the analysis of compressible flows, especially in complex or mobile geometry. In these situations, the establishment of a mesh correctly representing the solid with out loss of precision of discretization methods is difficult. An alternative is to use Cartesian mesh independently of the geometry of the flow domain by introducing an immersed boundary approach. In this context, we propose an improvement and extension of a method formulated for the simulation of incompressible flows. The two main characteristics of the proposed model are on the one hand the integration of a new velocity forcing term which takes into account the effects of pressure and on the other hand the integration of a new term of temperature correction in the treatment of the energy equation. This method has been integrated in two compressible solvers of OpenFOAM code: SonicFOAM and RhoCentralFOAM. The validation was carried out by considering different cases of increasing complexity on fixed and mobile 2D bodies, for which the Mach and Reynolds numbers were varied. In addition, cases involving parietal…

Advisors/Committee Members: Goncalves Da Silva, Eric (thesis director), Meldi, Marcello (thesis director).

Subjects/Keywords: Code OpenFOAM; OpenFOAM code

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Riahi, H. (2018). Développement d’une méthode des frontières immergées pour l’analyse et le contrôle des écoulements compressibles : Development of an Immersed Boundary Method for the Analysis and Control of Compressible Flows. (Doctoral Dissertation). Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique. Retrieved from http://www.theses.fr/2018ESMA0015

Chicago Manual of Style (16^th Edition):

Riahi, Hamza. “Développement d’une méthode des frontières immergées pour l’analyse et le contrôle des écoulements compressibles : Development of an Immersed Boundary Method for the Analysis and Control of Compressible Flows.” 2018. Doctoral Dissertation, Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique. Accessed April 22, 2021. http://www.theses.fr/2018ESMA0015.

MLA Handbook (7^th Edition):

Riahi, Hamza. “Développement d’une méthode des frontières immergées pour l’analyse et le contrôle des écoulements compressibles : Development of an Immersed Boundary Method for the Analysis and Control of Compressible Flows.” 2018. Web. 22 Apr 2021.

Vancouver:

Riahi H. Développement d’une méthode des frontières immergées pour l’analyse et le contrôle des écoulements compressibles : Development of an Immersed Boundary Method for the Analysis and Control of Compressible Flows. [Internet] [Doctoral dissertation]. Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique; 2018. [cited 2021 Apr 22]. Available from: http://www.theses.fr/2018ESMA0015.

Council of Science Editors:

Riahi H. Développement d’une méthode des frontières immergées pour l’analyse et le contrôle des écoulements compressibles : Development of an Immersed Boundary Method for the Analysis and Control of Compressible Flows. [Doctoral Dissertation]. Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique; 2018. Available from: http://www.theses.fr/2018ESMA0015

3. Maldonado, Jose Miguel. MODELLING WIND FLOW THROUGHCANOPIES SYSTEMS USING OPENFOAM.

Degree: Energy and Environmental Engineering, 2012, University of Gävle

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-15461

► The most proper emplacements for set a wind farm are already taken or cannot be used forenvironmental causes. So in order to check the… (more)

Subjects/Keywords: OpenFOAM; Windfarm; Canopy

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Maldonado, J. M. (2012). MODELLING WIND FLOW THROUGHCANOPIES SYSTEMS USING OPENFOAM. (Thesis). University of Gävle. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-15461

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Maldonado, Jose Miguel. “MODELLING WIND FLOW THROUGHCANOPIES SYSTEMS USING OPENFOAM.” 2012. Thesis, University of Gävle. Accessed April 22, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-15461.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Maldonado, Jose Miguel. “MODELLING WIND FLOW THROUGHCANOPIES SYSTEMS USING OPENFOAM.” 2012. Web. 22 Apr 2021.

Vancouver:

Maldonado JM. MODELLING WIND FLOW THROUGHCANOPIES SYSTEMS USING OPENFOAM. [Internet] [Thesis]. University of Gävle; 2012. [cited 2021 Apr 22]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-15461.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Maldonado JM. MODELLING WIND FLOW THROUGHCANOPIES SYSTEMS USING OPENFOAM. [Thesis]. University of Gävle; 2012. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-15461

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Windsor

4. Wang, Ran. NUMERICAL SIMULATIONS ON FLOW AROUND AN INCLINED CIRCULAR CYLINDER AT HIGH REYNOLDS NUMBER.

Degree: MA, Civil and Environmental Engineering, 2018, University of Windsor

URL: https://scholar.uwindsor.ca/etd/7584

► Existing studies suggested a number of possible contributing factors to dry inclined cable galloping, including the axial flow forming on the leeward side of the… (more)

▼ Existing studies suggested a number of possible contributing factors to dry inclined cable galloping, including the axial flow forming on the leeward side of the inclined cable and the emergence of critical Reynolds number. The current study aims at investigating the role of cylinder orientation and Reynolds number in this phenomenon. A combination of the detached eddy and large eddy simulations was conducted to study the fluid structure around and aerodynamic force coefficients of a stationary circular cylinder normal to or inclined against the oncoming flow. The developed numerical models have been validated using existing numerical and experimental data. The effect of axial flow, in terms of the cylinder orientation represented by the attack angle (0 ◦ , 30 ◦ , 45 ◦ , 60 ◦ ), and the Reynolds number (3900, 1.4E4 , 1E5 , 1.4E5 , 2.8E5 ) have been discussed in detailed. A numerical study has been performed to indirectly examine the effect of the axial flow via a perforated splitter plate. Visualization of the fluid structure shows that a secondary flow forms on the leeward side of the circular cylinder when it is inclined, and the separated shear flow becomes more stable as cylinder orientation increases. Results indicate that the inclination of the circular cylinder would cause a near-zero span-wise averaged lift force due to the span-wise delay of the sectional cross-flow force coefficient. The sectional lift force coefficient is found to become more disorganized when the flow enters the critical Reynolds number régime in general. Within this critical range, the span-wise averaged lift force coefficient shows a peak amplitude that significantly differs from that in the subsequent shedding cycles when the attack angle is less than 45 ◦ . Results of the perforated splitter plate manifest that with the decrease of the splitter plate perforation ratio, a stronger interruption on the interaction between the two separated shear flows was found. Advisors/Committee Members: Cheng, Shaohong, Ting, David S-K..

Subjects/Keywords: CFD; Galloping; OpenFOAM

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wang, R. (2018). NUMERICAL SIMULATIONS ON FLOW AROUND AN INCLINED CIRCULAR CYLINDER AT HIGH REYNOLDS NUMBER. (Masters Thesis). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/7584

Chicago Manual of Style (16^th Edition):

Wang, Ran. “NUMERICAL SIMULATIONS ON FLOW AROUND AN INCLINED CIRCULAR CYLINDER AT HIGH REYNOLDS NUMBER.” 2018. Masters Thesis, University of Windsor. Accessed April 22, 2021. https://scholar.uwindsor.ca/etd/7584.

MLA Handbook (7^th Edition):

Wang, Ran. “NUMERICAL SIMULATIONS ON FLOW AROUND AN INCLINED CIRCULAR CYLINDER AT HIGH REYNOLDS NUMBER.” 2018. Web. 22 Apr 2021.

Vancouver:

Wang R. NUMERICAL SIMULATIONS ON FLOW AROUND AN INCLINED CIRCULAR CYLINDER AT HIGH REYNOLDS NUMBER. [Internet] [Masters thesis]. University of Windsor; 2018. [cited 2021 Apr 22]. Available from: https://scholar.uwindsor.ca/etd/7584.

Council of Science Editors:

Wang R. NUMERICAL SIMULATIONS ON FLOW AROUND AN INCLINED CIRCULAR CYLINDER AT HIGH REYNOLDS NUMBER. [Masters Thesis]. University of Windsor; 2018. Available from: https://scholar.uwindsor.ca/etd/7584

5. MAIOLI, A. G. CFD OpenFOAM: Implementação da Combustão Smouldering e sua Avaliação Paramétrica.

Degree: 2016, Universidade Federal do Espírito Santo; Mestrado em Engenharia Mecânica; Programa de Pós-Graduação em Engenharia Mecânica; UFES; BR

URL: http://repositorio.ufes.br/handle/10/9737

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A combustão… (more)

Subjects/Keywords: combustão smouldering; OpenFOAM

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APA (6^th Edition):

MAIOLI, A. G. (2016). CFD OpenFOAM: Implementação da Combustão Smouldering e sua Avaliação Paramétrica. (Masters Thesis). Universidade Federal do Espírito Santo; Mestrado em Engenharia Mecânica; Programa de Pós-Graduação em Engenharia Mecânica; UFES; BR. Retrieved from http://repositorio.ufes.br/handle/10/9737

Chicago Manual of Style (16^th Edition):

MAIOLI, A G. “CFD OpenFOAM: Implementação da Combustão Smouldering e sua Avaliação Paramétrica.” 2016. Masters Thesis, Universidade Federal do Espírito Santo; Mestrado em Engenharia Mecânica; Programa de Pós-Graduação em Engenharia Mecânica; UFES; BR. Accessed April 22, 2021. http://repositorio.ufes.br/handle/10/9737.

MLA Handbook (7^th Edition):

MAIOLI, A G. “CFD OpenFOAM: Implementação da Combustão Smouldering e sua Avaliação Paramétrica.” 2016. Web. 22 Apr 2021.

Vancouver:

MAIOLI AG. CFD OpenFOAM: Implementação da Combustão Smouldering e sua Avaliação Paramétrica. [Internet] [Masters thesis]. Universidade Federal do Espírito Santo; Mestrado em Engenharia Mecânica; Programa de Pós-Graduação em Engenharia Mecânica; UFES; BR; 2016. [cited 2021 Apr 22]. Available from: http://repositorio.ufes.br/handle/10/9737.

Council of Science Editors:

MAIOLI AG. CFD OpenFOAM: Implementação da Combustão Smouldering e sua Avaliação Paramétrica. [Masters Thesis]. Universidade Federal do Espírito Santo; Mestrado em Engenharia Mecânica; Programa de Pós-Graduação em Engenharia Mecânica; UFES; BR; 2016. Available from: http://repositorio.ufes.br/handle/10/9737

6. Leandro Filho, Francisco de Assis. Escoamento viscoso em fraturas auto-afins.

Degree: 2019, Brazil

URL: http://www.repositorio.ufc.br/handle/riufc/40261

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Rejected by Maria de Jesus Santos ([email protected]),… (more)

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Rejected by Maria de Jesus Santos ([email protected]), reason: Segue link sobre a normalização de trabalhos acadêmicos da UFC: http://www.biblioteca.ufc.br/servicos-e-produtos/normalizacao-de-trabalhos-academicos/. A tese deve apresentar ficha catalográfica após folha de rosto, antes da folha de aprovação. on 2019-03-08T20:06:08Z (GMT)

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Made available in DSpace on 2019-03-12T17:38:55Z (GMT). No. of bitstreams: 1 2019_tese_faleandrofilho.pdf: 23229871 bytes, checksum: f9a613a3689eecbb776cbea64ab327fa (MD5) Previous issue date: 2019

This work aims to study the process of flow of a fluid through uneven surfaces. Initially will address the dynamics of flow through rough surfaces with self-affine geometry. Essentially, the relevant aspects in understanding the flow of irregular structural systems are closely associated with topological and morphological formation of the half. The topology and morphology of the irregular system will be described. It will be appreciated that the geometry of the interfaces that constitute the rough channel feature invariant under transformations statistical properties of anisotropic scale, i.e., can be characterized as self-affine fractal surfaces. The irregular nature of this geometry adds a degree of complexity to the flow problem, reflecting on the properties of velocity and pressure fields. This study aims to investigate the fluid flow in self-affines surfaces through direct numerical simulations of the Navier-Stokes equations. We investigate the influence of the surface roughness to the viscous and non-viscous flow of Newtonian fluids in self-affine joints and fractured surfaces. We denote that the effective permeability of the decays exponentially with the Hurst exponent, used as a quantitative measure of the surface roughness. Nonlinear contributions to the fluid hydraulic resistance become important for sufficiently high Reynolds numbers, due inertial forces contributions, which is typical of experiments. To cubic order, we fi nd that it is possible to nd a universal behavior of the hydraulic resistance of the system, with the onset of the nonlinear corrections to Darcy's law being proportional to the Hurst exponent. This implies that the system can be described macroscopically only by the permeability even for very rough surfaces (H ~ 0.3). We also nd the spontaneous occurrence quasi-one-dimensional channeling in the flow, even with no relative…

Advisors/Committee Members: Carmona, Humberto de Andrade.

Subjects/Keywords: Escoamento; Fluidos; OpenFOAM

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Leandro Filho, F. d. A. (2019). Escoamento viscoso em fraturas auto-afins. (Doctoral Dissertation). Brazil. Retrieved from http://www.repositorio.ufc.br/handle/riufc/40261

Chicago Manual of Style (16^th Edition):

Leandro Filho, Francisco de Assis. “Escoamento viscoso em fraturas auto-afins.” 2019. Doctoral Dissertation, Brazil. Accessed April 22, 2021. http://www.repositorio.ufc.br/handle/riufc/40261.

MLA Handbook (7^th Edition):

Leandro Filho, Francisco de Assis. “Escoamento viscoso em fraturas auto-afins.” 2019. Web. 22 Apr 2021.

Vancouver:

Leandro Filho FdA. Escoamento viscoso em fraturas auto-afins. [Internet] [Doctoral dissertation]. Brazil; 2019. [cited 2021 Apr 22]. Available from: http://www.repositorio.ufc.br/handle/riufc/40261.

Council of Science Editors:

Leandro Filho FdA. Escoamento viscoso em fraturas auto-afins. [Doctoral Dissertation]. Brazil; 2019. Available from: http://www.repositorio.ufc.br/handle/riufc/40261

Penn State University

7. Samra, Stefan Basil. NUMERICAL IMPLEMENTATION OF A CONTINUUM PLATELET AGGREGATION MODEL .

Degree: 2011, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/11932

► A continuum stress transport model of platelet aggregation from the literature [14], [16], [15], and [18] is presented and solved numerically. The model is a… (more)

▼ A continuum stress transport model of platelet aggregation from the literature [14], [16], [15], and [18] is presented and solved numerically. The model is a single-scale reduction of a multi-scale model and utilizes the incompressible Navier-Stokes equations with a Newtonian constituative relationship to govern blood ow. Other �eld variables including platelet and chemical activator concentrations exist with partial di�erential equations governing their transport. The platelet aggregation model is closely related to the model of the viscoelastic Oldroyd-B uid, which is discussed. The focus of this thesis is on the numerical solution of the Oldroyd-B equations and the equations comprising the platelet aggregation model using a �nite volume formulation within an existing open source Computational Fluid Dynamics platform. Pressure-velocity coupling is achieved using the PISO Algorithm while the remaining model equations are solved sequentially. In the �rst class of simulations, the ow of an Oldroyd-B uid is solved within a two dimen- sional planar domain. The viscous and elastic properties of the uid are varied in an e�ort to observe the model's resulting behavior. Exact solutions for the transient and steady-state ow of an Oldroyd-B uid are used for the purpose of validating the numerical approach. Numerical solutions are observed to correspond well with exact solutions for a range of parameter sets. Solution divergence is observed under certain conditions, speci�cally for uids with high Weis- senberg numbers and elastic moduli. In the second class of simulations, the platelet aggregation model is solved within the same domain as the Oldroyd-B simulations. Clot growth is observed but solution divergence occurs in the presence of growth of the model's stress tensor �eld. By limiting certain model parameters it is shown that numerical stability can be improved. Using this approach, the sensitivity of results to various model parameters is investigated. Finally, a preliminary investigation of the application of the model to the clinically important case of clot growth within stagnant and recirculating ows is presented. Advisors/Committee Members: Eric G Paterson, Thesis Advisor/Co-Advisor, Eric G Paterson, Thesis Advisor/Co-Advisor.

Subjects/Keywords: openfoam; platelet aggregation; thrombosis; numerical

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APA (6^th Edition):

Samra, S. B. (2011). NUMERICAL IMPLEMENTATION OF A CONTINUUM PLATELET AGGREGATION MODEL . (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/11932

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Samra, Stefan Basil. “NUMERICAL IMPLEMENTATION OF A CONTINUUM PLATELET AGGREGATION MODEL .” 2011. Thesis, Penn State University. Accessed April 22, 2021. https://submit-etda.libraries.psu.edu/catalog/11932.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Samra, Stefan Basil. “NUMERICAL IMPLEMENTATION OF A CONTINUUM PLATELET AGGREGATION MODEL .” 2011. Web. 22 Apr 2021.

Vancouver:

Samra SB. NUMERICAL IMPLEMENTATION OF A CONTINUUM PLATELET AGGREGATION MODEL . [Internet] [Thesis]. Penn State University; 2011. [cited 2021 Apr 22]. Available from: https://submit-etda.libraries.psu.edu/catalog/11932.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Samra SB. NUMERICAL IMPLEMENTATION OF A CONTINUUM PLATELET AGGREGATION MODEL . [Thesis]. Penn State University; 2011. Available from: https://submit-etda.libraries.psu.edu/catalog/11932

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Halmstad University

8. Ivchenko, Alexander. Incorporation of OpenFOAM software into Computational Fluid Dynamics process in Volvo Technology.

Degree: Computer and Electrical Engineering (IDE), 2011, Halmstad University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-16356

► In this thesis work the feasibility of using open source OpenFOAM software as a solver part for Computation Fluid Dynamics in Volvo Technology is… (more)

Subjects/Keywords: OpenFOAM; CFD; Computational Fluid Dynamics

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APA (6^th Edition):

Ivchenko, A. (2011). Incorporation of OpenFOAM software into Computational Fluid Dynamics process in Volvo Technology. (Thesis). Halmstad University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-16356

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ivchenko, Alexander. “Incorporation of OpenFOAM software into Computational Fluid Dynamics process in Volvo Technology.” 2011. Thesis, Halmstad University. Accessed April 22, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-16356.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ivchenko, Alexander. “Incorporation of OpenFOAM software into Computational Fluid Dynamics process in Volvo Technology.” 2011. Web. 22 Apr 2021.

Vancouver:

Ivchenko A. Incorporation of OpenFOAM software into Computational Fluid Dynamics process in Volvo Technology. [Internet] [Thesis]. Halmstad University; 2011. [cited 2021 Apr 22]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-16356.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ivchenko A. Incorporation of OpenFOAM software into Computational Fluid Dynamics process in Volvo Technology. [Thesis]. Halmstad University; 2011. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-16356

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

9. Patil, Akshay (author). Numerical investigation of the effect of nappe non-aeration on caisson sliding force during Tsunami breakwater over-topping using OpenFOAM.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:65aff400-8610-4867-92fa-ca33a9e54a01

►

During the 2011 Great East Japan Tsunami, the world’s deepest breakwaters in Kamaishi and Ofunato, which had been designed to reduce tsunami damage, partially failed… (more)

▼

During the 2011 Great East Japan Tsunami, the world’s deepest breakwaters in Kamaishi and Ofunato, which had been designed to reduce tsunami damage, partially failed after over-topping. The failure was due to a combination of sliding, over-topping induced foundation scour and foundation bearing capacity failure. Hindcasting this failure required detailed two-phase (air-water) Computational Fluid Dynamics (CFD) (OpenFOAM in this case) simulation, though uncertainty in the turbulence model used had a large effect on the simulated forces on the breakwater. This study focuses on understanding the physics necessary to correctly model the problem of breakwater over-topping by the tsunami (Bricker et al. 2013). To correctly model the physical behavior of the system, physical model studies were carried out (Mudiyanselage 2017). However, validation of the numerical model will allow easy up-scaling of the flow physics. In order to have complete flexibility in the CFD code while at the same time have sufficient reliability, OpenFOAM will be used. As the physical model studies have already been carried out, this study will only focus on replicating the experimental results in the numerical model. A validation procedure will study the effect of grid size (using grid convergence study) and type of simulation (2-Dimensional/3-Dimensional) used to model the experiment numerically. The final goal of the study is to understand the relationship between the overflowing discharge and the additional force generated due to the non-aeration of the over-flow jet. The entrainment of air from the cavity under the over-flow jet is also of prime interest in this study. Overall, the numerical results indicate that non-aeration could provide about 17.85% additional force leading to failure by sliding/overturning. It was observed that the forcing on the caisson is not constant but cyclic. This is a key result from this study affecting the design of the caisson breakwater. Additionally, the aeration mechanism and overflow jet breakup during the flow were also investigated. A mechanism for aeration of the cavity has been proposed as observed in the numerical model results. However, due to the limited scope of the study and time constraints, further investigations with respect to the overflow discharges was not possible.

Hydraulic Engineering | Environmental Fluid Mechanics

Advisors/Committee Members: Uijttewaal, Wim (mentor), Bricker, Jeremy (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: Breakwater Overtopping; OpenFOAM; CFD modelling

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Patil, A. (. (2018). Numerical investigation of the effect of nappe non-aeration on caisson sliding force during Tsunami breakwater over-topping using OpenFOAM. (Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:65aff400-8610-4867-92fa-ca33a9e54a01

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Patil, Akshay (author). “Numerical investigation of the effect of nappe non-aeration on caisson sliding force during Tsunami breakwater over-topping using OpenFOAM.” 2018. Thesis, Delft University of Technology. Accessed April 22, 2021. http://resolver.tudelft.nl/uuid:65aff400-8610-4867-92fa-ca33a9e54a01.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Patil, Akshay (author). “Numerical investigation of the effect of nappe non-aeration on caisson sliding force during Tsunami breakwater over-topping using OpenFOAM.” 2018. Web. 22 Apr 2021.

Vancouver:

Patil A(. Numerical investigation of the effect of nappe non-aeration on caisson sliding force during Tsunami breakwater over-topping using OpenFOAM. [Internet] [Thesis]. Delft University of Technology; 2018. [cited 2021 Apr 22]. Available from: http://resolver.tudelft.nl/uuid:65aff400-8610-4867-92fa-ca33a9e54a01.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Patil A(. Numerical investigation of the effect of nappe non-aeration on caisson sliding force during Tsunami breakwater over-topping using OpenFOAM. [Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:65aff400-8610-4867-92fa-ca33a9e54a01

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

10. Janssen, Danny (author). Stability analysis of XblocPlus crest element.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:cfc871cd-261e-4f8f-88a2-ebb17d2c3b8f

► In the past humans used to protect their shores mainly with rocks. In the past decades the shore protections did gently shift to concrete element… (more)

▼ In the past humans used to protect their shores mainly with rocks. In the past decades the shore protections did gently shift to concrete element protections. An example of an often applied concrete armour unit is the Xbloc. This element is quite strong and well investigated. BAM Infraconsult has developed a uniformly placed armor unit, the XblocPlus. The new XblocPlus is placed in a regular pattern, which is easier for contractors to construct. A design detail of a XblocPlus armor layer which still needs some attention is the transition from the slope to the crest. The elements are placed in horizontal rows, locked in place by two elements in the row above and two elements in the row below. However, the upper element is not supported by any element above it, leading to less interlocking. This study focusses on the physical processes which lead to (in)stability of the upper element and tries to increase this stability. First, physical laboratory tests were performed with the main aim to visually observe the failure methods of the upper XblocPlus element. After the initial tests, a computational fluid dynamic model was built with the aim to get a better insight in the load distribution on a single XblocPlus element under wave impact. To increase the stability of the element as much as possible, several increments to the stability of the upper element are proposed. The first method which increases the stability of the element is to cover the back of the element with rock, this changes the rotation point of the element backwards which increases the wave load required to initiate rocking. A second possibility is to face the top of the upper element downward, this does decrease the drag on the element. A third possibility is to face the top of the upper element upward, this leads to a higher drag on the upper element. However, this orientation makes it possible to bury the element in a rock backfill, increasing the weight of the element. This thesis did slightly research the applicability of CFD models to concrete armor design. The main conclusion for this trial is that it is possible to apply numerical models for the design of breakwaters, however physical model tests are still required to validate the obtained data from the numerical model, since the flow around a coastal structure is that complex, it only estimates the loads in the right order of magnitude when not validated. The validity of the model can be increased by calibrating the soil parameters using measured pressures in the different layers of the breakwater. To increase the accuracy of a numerical model, one could construct a three dimensional structure, which requires much computational grid cells, making the computational demand of the system quite high. Advisors/Committee Members: Aarninkhof, Stefan (mentor), Hofland, Bas (mentor), van den Bos, Jeroen (mentor), Reedijk, B (mentor), Eggeling, T (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: XblocPlus; OpenFOAM; Crest; Breakwater

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Janssen, D. (. (2018). Stability analysis of XblocPlus crest element. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:cfc871cd-261e-4f8f-88a2-ebb17d2c3b8f

Chicago Manual of Style (16^th Edition):

Janssen, Danny (author). “Stability analysis of XblocPlus crest element.” 2018. Masters Thesis, Delft University of Technology. Accessed April 22, 2021. http://resolver.tudelft.nl/uuid:cfc871cd-261e-4f8f-88a2-ebb17d2c3b8f.

MLA Handbook (7^th Edition):

Janssen, Danny (author). “Stability analysis of XblocPlus crest element.” 2018. Web. 22 Apr 2021.

Vancouver:

Janssen D(. Stability analysis of XblocPlus crest element. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Apr 22]. Available from: http://resolver.tudelft.nl/uuid:cfc871cd-261e-4f8f-88a2-ebb17d2c3b8f.

Council of Science Editors:

Janssen D(. Stability analysis of XblocPlus crest element. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:cfc871cd-261e-4f8f-88a2-ebb17d2c3b8f

University of New Mexico

11. Gomez, Sebastian. Verification of Statistical Turbulence Models in Aerodynamic Flows.

Degree: Mechanical Engineering, 2014, University of New Mexico

URL: http://hdl.handle.net/1928/24484

► Computational fluid dynamics (CFD) is a tool that is commonly used in industry and academia. Engineers and scientists are sometimes apprehensive about the use of… (more)

Subjects/Keywords: CFD Verification Turbulence OpenFOAM NASA

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gomez, S. (2014). Verification of Statistical Turbulence Models in Aerodynamic Flows. (Masters Thesis). University of New Mexico. Retrieved from http://hdl.handle.net/1928/24484

Chicago Manual of Style (16^th Edition):

Gomez, Sebastian. “Verification of Statistical Turbulence Models in Aerodynamic Flows.” 2014. Masters Thesis, University of New Mexico. Accessed April 22, 2021. http://hdl.handle.net/1928/24484.

MLA Handbook (7^th Edition):

Gomez, Sebastian. “Verification of Statistical Turbulence Models in Aerodynamic Flows.” 2014. Web. 22 Apr 2021.

Vancouver:

Gomez S. Verification of Statistical Turbulence Models in Aerodynamic Flows. [Internet] [Masters thesis]. University of New Mexico; 2014. [cited 2021 Apr 22]. Available from: http://hdl.handle.net/1928/24484.

Council of Science Editors:

Gomez S. Verification of Statistical Turbulence Models in Aerodynamic Flows. [Masters Thesis]. University of New Mexico; 2014. Available from: http://hdl.handle.net/1928/24484

University of Windsor

12. Ye, Sitong. Prediction of airflow for automotive cooling applications using openFOAM.

Degree: MA, Mechanical, Automotive, and Materials Engineering, 2018, University of Windsor

URL: https://scholar.uwindsor.ca/etd/7589

► This research focuses on studying OpenFOAM's capability of underhood thermal simulations and investigating the performance of various fan modeling techniques in comparison to other commercial… (more)

Subjects/Keywords: CFD; Fan; MRF; OpenFOAM

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ye, S. (2018). Prediction of airflow for automotive cooling applications using openFOAM. (Masters Thesis). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/7589

Chicago Manual of Style (16^th Edition):

Ye, Sitong. “Prediction of airflow for automotive cooling applications using openFOAM.” 2018. Masters Thesis, University of Windsor. Accessed April 22, 2021. https://scholar.uwindsor.ca/etd/7589.

MLA Handbook (7^th Edition):

Ye, Sitong. “Prediction of airflow for automotive cooling applications using openFOAM.” 2018. Web. 22 Apr 2021.

Vancouver:

Ye S. Prediction of airflow for automotive cooling applications using openFOAM. [Internet] [Masters thesis]. University of Windsor; 2018. [cited 2021 Apr 22]. Available from: https://scholar.uwindsor.ca/etd/7589.

Council of Science Editors:

Ye S. Prediction of airflow for automotive cooling applications using openFOAM. [Masters Thesis]. University of Windsor; 2018. Available from: https://scholar.uwindsor.ca/etd/7589

University of New South Wales

13. Behzadi, James. Conditional moment closure for SCCI combustion.

Degree: Mechanical & Manufacturing Engineering, 2017, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/57440 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:43407/SOURCE02?view=true

► Homogeneous charge compression ignition (HCCI) and stratified charge compression ignition (SCCI) engines potentiallyoffer high fuel economy and low emissions. Practical problems need to be overcome,… (more)

▼ Homogeneous charge compression ignition (HCCI) and stratified charge compression ignition (SCCI) engines potentiallyoffer high fuel economy and low emissions. Practical problems need to be overcome, however, and several of them areaffected by or may be alleviated/controlled by stratification of the charge, whether deliberate mixture-stratification by directinjection, or thermal stratification resulting from wall-heat transfer. This thesis therefore seeks to develop and evaluate acomputational model of the combustion process in HCCI and SCCI engines that is capable of simulating the effects of chargestratification. The basis of the modelling is an approach known as conditional moment closure (CMC), originally developedfor nonpremixed jet flames, which reduces errors associated with closure of chemical source terms by conditioning themon a variable upon which they principally depend. This thesis builds on previous work to adapt CMC to HCCI and SCCIengines which considered thermally stratified ignitions in an environment free of walls. In two important steps towards acomplete CMC model of an SCCI engine, the present thesis considers first mixture-stratified ignition and second thermallystratified ignitions in the presence of walls. In the former case the baseline CMC model considers mixture fraction as theconditioning variable, while in the latter it considers total enthalpy. Extensions of these models by considering second orderclosure, double conditioning, and conditioning on reacting scalars are also considered.Two sets of two-dimensional direct numerical simulation (DNS) are employed to evaluate performance of the CMCmodels. The first DNS data-set simulate ignitions in SCCI-like thermochemical conditions with compositionally stratifiedn-heptane / air mixtures in a constant volume representing the bulk gas at top dead centre (TDC) of an SCCI engine.The second DNS data-set considers the effect of wall heat transfer on auto-ignition of thermally stratified hydrogen/airmixtures in a two-dimensional channel representing the TDC of an HCCI engine. The first DNS data-set is parametrised byfluctuations in mixture composition and temperature, whereas the second set is parametrised by temperature fluctuations.Using the first DNS data-set, and the mixture-fraction CMC model, a posteriori tests of the model, which is implementedin an open-source computational fluid dynamics (CFD) package known as OpenFOAMR , reveals an excellent agreementbetween the CFD-CMC solver and the DNS data-set for the cases with low levels of stratification, whereas deviations fromthe DNS are observed in cases which exhibit high level of stratifications. A subsequent a priori analysis reveals that thereason for disagreement is failure of the first-order closure due to the high level of conditional fluctuations. A second-orderclosure is also shown to fail to improve the results and it is only double conditioning that provides a satisfactory closure forthe reaction rates.Using the second DNS data-set modelling ignition in a channel with wall heat… Advisors/Committee Members: Hawkes, Evatt, Mechanical & Manufacturing Engineering, Faculty of Engineering, UNSW, Bolla, Michele, Aerothermochemistry and Combustion Systems Laboratory, ETH Zurich, Talei, Mohsen, Department of Mechanical Engineering, University of Melbourne, Kook, Shawn, Mechanical & Manufacturing Engineering, Faculty of Engineering, UNSW.

Subjects/Keywords: DNS; CMC; openFOAM; SCCI; HCCI

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Behzadi, J. (2017). Conditional moment closure for SCCI combustion. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/57440 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:43407/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Behzadi, James. “Conditional moment closure for SCCI combustion.” 2017. Doctoral Dissertation, University of New South Wales. Accessed April 22, 2021. http://handle.unsw.edu.au/1959.4/57440 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:43407/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Behzadi, James. “Conditional moment closure for SCCI combustion.” 2017. Web. 22 Apr 2021.

Vancouver:

Behzadi J. Conditional moment closure for SCCI combustion. [Internet] [Doctoral dissertation]. University of New South Wales; 2017. [cited 2021 Apr 22]. Available from: http://handle.unsw.edu.au/1959.4/57440 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:43407/SOURCE02?view=true.

Council of Science Editors:

Behzadi J. Conditional moment closure for SCCI combustion. [Doctoral Dissertation]. University of New South Wales; 2017. Available from: http://handle.unsw.edu.au/1959.4/57440 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:43407/SOURCE02?view=true

Virginia Tech

14. Li, Jiahui. Verification and Validation Study of OpenFOAM on the Generic Prismatic Planing Hull Form.

Degree: MS, Ocean Engineering, 2019, Virginia Tech

URL: http://hdl.handle.net/10919/89904

► The paper presents the first series of results obtained in an ongoing validation and verification study of inter-dynamic OpenFOAM solver framework on a new set… (more)

Subjects/Keywords: Planing Hull; GPPH; OpenFOAM; URANS

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Li, J. (2019). Verification and Validation Study of OpenFOAM on the Generic Prismatic Planing Hull Form. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/89904

Chicago Manual of Style (16^th Edition):

Li, Jiahui. “Verification and Validation Study of OpenFOAM on the Generic Prismatic Planing Hull Form.” 2019. Masters Thesis, Virginia Tech. Accessed April 22, 2021. http://hdl.handle.net/10919/89904.

MLA Handbook (7^th Edition):

Li, Jiahui. “Verification and Validation Study of OpenFOAM on the Generic Prismatic Planing Hull Form.” 2019. Web. 22 Apr 2021.

Vancouver:

Li J. Verification and Validation Study of OpenFOAM on the Generic Prismatic Planing Hull Form. [Internet] [Masters thesis]. Virginia Tech; 2019. [cited 2021 Apr 22]. Available from: http://hdl.handle.net/10919/89904.

Council of Science Editors:

Li J. Verification and Validation Study of OpenFOAM on the Generic Prismatic Planing Hull Form. [Masters Thesis]. Virginia Tech; 2019. Available from: http://hdl.handle.net/10919/89904

Brunel University

15. Dyson, Joshua. GPU accelerated linear system solvers for OpenFOAM and their application to sprays.

Degree: PhD, 2018, Brunel University

URL: http://bura.brunel.ac.uk/handle/2438/16005 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764958

► This thesis presents the development of GPU accelerated solvers for use in simulation of the primary atomization phenomenon. By using the open source continuum mechanics… (more)

Subjects/Keywords: 620.1; Primary atomization; OpenFOAM; Multigrid

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dyson, J. (2018). GPU accelerated linear system solvers for OpenFOAM and their application to sprays. (Doctoral Dissertation). Brunel University. Retrieved from http://bura.brunel.ac.uk/handle/2438/16005 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764958

Chicago Manual of Style (16^th Edition):

Dyson, Joshua. “GPU accelerated linear system solvers for OpenFOAM and their application to sprays.” 2018. Doctoral Dissertation, Brunel University. Accessed April 22, 2021. http://bura.brunel.ac.uk/handle/2438/16005 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764958.

MLA Handbook (7^th Edition):

Dyson, Joshua. “GPU accelerated linear system solvers for OpenFOAM and their application to sprays.” 2018. Web. 22 Apr 2021.

Vancouver:

Dyson J. GPU accelerated linear system solvers for OpenFOAM and their application to sprays. [Internet] [Doctoral dissertation]. Brunel University; 2018. [cited 2021 Apr 22]. Available from: http://bura.brunel.ac.uk/handle/2438/16005 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764958.

Council of Science Editors:

Dyson J. GPU accelerated linear system solvers for OpenFOAM and their application to sprays. [Doctoral Dissertation]. Brunel University; 2018. Available from: http://bura.brunel.ac.uk/handle/2438/16005 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764958

Delft University of Technology

16. Ansorena Ruiz, Ruben (author). CFD modelling: The interaction between extreme waves and a lighthouse upon a shoal.

Degree: 2019, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:a9d9aa34-a6c7-4398-978c-46fb6b0f86ae

►

Lighthouses are structures subjected to extreme weather conditions which have to resist strong surge. Therefore to ensure their survival over time, it is necessary to… (more)

▼

Lighthouses are structures subjected to extreme weather conditions which have to resist strong surge. Therefore to ensure their survival over time, it is necessary to determine the loads that these structures will face during its lifetime. However, load prediction on lighthouses is troublesome due to the multiple factors that affect the loading. First, the geometries of lighthouses vary considerably from one to another, not usually representing the classic cylindrical shape by which they are modelled in laboratories. Second, climate change transforms the statistical properties of the sea states and will bring more extreme events in the near future. As so as sea level rise. Lastly, the bathymetry around a lighthouse is considerably different to the ones used to model lighthouses in labs, which can affect wave propagation and breaking. Therefore loading is affected. As the traditional physical methods are both expensive and time consuming, researchers have developed computational tools to accurately represent reality. In this report, waves2Foam (a toolbox within OpenFOAM) will be used to reproduce some tests performed on a physical wave flume. The goal is to represent the conditions of the lab in the computational model so that this model can then be used to represent different geometries and wave loads over lighthouses in an easy and cheap way. Additionally, the most of the current tests were performed with waves directly hitting the lighthouse structure. However in this study, the waves break over a shoal and then the mass of water reaches the structure. This causes a smaller maximum load but the load is applied during a longer time that when a wave breaks directly on the lighthouse. In this study the physical model performed by Piermodesto Caputo (year 2017/2018) and supervised by Professor Renata Archetti and Dr. Alessandro Antonini (co-supervisor) will be modeled using waves2Foam (OpenFOAM). The physical model was performed in Plymouth University laboratory "COAST". The goal of the model was to determine the loads that the Dubh Artach lighthouse will face in the future taking into account sea level rise and extreme weather conditions due to climate change.

Civil Engineering | Hydraulic Engineering | Hydraulic Structures and Flood Risk

Advisors/Committee Members: Antonini, A. (mentor), Tissier, M.F.S. (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: OpenFOAM; wave flume; lighthouse

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ansorena Ruiz, R. (. (2019). CFD modelling: The interaction between extreme waves and a lighthouse upon a shoal. (Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:a9d9aa34-a6c7-4398-978c-46fb6b0f86ae

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ansorena Ruiz, Ruben (author). “CFD modelling: The interaction between extreme waves and a lighthouse upon a shoal.” 2019. Thesis, Delft University of Technology. Accessed April 22, 2021. http://resolver.tudelft.nl/uuid:a9d9aa34-a6c7-4398-978c-46fb6b0f86ae.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ansorena Ruiz, Ruben (author). “CFD modelling: The interaction between extreme waves and a lighthouse upon a shoal.” 2019. Web. 22 Apr 2021.

Vancouver:

Ansorena Ruiz R(. CFD modelling: The interaction between extreme waves and a lighthouse upon a shoal. [Internet] [Thesis]. Delft University of Technology; 2019. [cited 2021 Apr 22]. Available from: http://resolver.tudelft.nl/uuid:a9d9aa34-a6c7-4398-978c-46fb6b0f86ae.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ansorena Ruiz R(. CFD modelling: The interaction between extreme waves and a lighthouse upon a shoal. [Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:a9d9aa34-a6c7-4398-978c-46fb6b0f86ae

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

17. Pernot, Eric. Modélisation du changement d’état solide-liquide. Application au stockage thermique par chaleur latente Adapté aux centrales solaires thermodynamiques : Modeling of the solid-liquid phase change. Application to the latent heat thermal energy storage Suitable for concentrated solar power plant.

Degree: Docteur es, Energétique, 2015, Pau

URL: http://www.theses.fr/2015PAUU3044

► L'un des principaux leviers technologiques permettant le développement industriel de process de production énergétique renouvelable et à haute efficacité, consiste en l'élaboration d'une solution innovante… (more)

▼ L'un des principaux leviers technologiques permettant le développement industriel de process de production énergétique renouvelable et à haute efficacité, consiste en l'élaboration d'une solution innovante de stockage de l'énergie. Ce système de stockage doit permettre de lisser la période de production et ainsi de suivre au plus près les besoins des consommateurs. Parmi les solutions existantes, le stockage thermique par chaleur latente présente de nombreux avantages qui font qu'aujourd'hui il fait l'objet de plusieurs travaux de recherche et de développement. Cette technologie est basée sur le principe que certaines classes de matériaux, appelés matériaux à changement de phase (MCP), libèrent (transition liquide/solide) ou accumulent (transition solide/liquide) de l'énergie lorsqu'ils sont soumis à un changement de phase. En amont du développement d'un design de stockage, il est essentiel de comprendre et de maitriser les processus thermiques entrant en jeu lors des phases de fusion et de solidification du matériau et cette compréhension passe par le développement de modèles numériques adaptés aux problématiques rencontrées. Dans le cadre de ce manuscrit, la filière technologique qui nous intéresse est celle des centrales solaires à concentration. Porté par l'ADEME dans le cadre du projet STARS (Stockage Thermique appliqué à l'extension de pRoduction d'énergie Solaire thermodynamique), le travail réalisé au sein du LaTEP consiste à analyser les performances d'une solution de stockage via la modélisation de cette dernière en considérant les phénomènes thermiques et hydrauliques. Le travail de modélisation est effectué à l'aide du logiciel de CFD libre de droit OpenFOAM dans lequel est développé et implémenté, par le laboratoire, un module dédié au problème qui nous concerne, à savoir la résolution eulérienne (maillage fixe) des équations de conservation pour un fluide incompressible, en présence d'un changement de phase solide-liquide dominé par des mouvements convectifs (convection-dominated phase change). Concernant les problèmes de transition de phase, diverses méthodes mathématiques et numériques ont été développées pour rendre compte finement de la physique de ces phénomènes. Après avoir effectué une revue de ces dernières dans la première partie du manuscrit, nous avons sélectionné deux formulations que nous avons implémenté dans OpenFOAM. Une fois ce travail réalisé nous avons taché de comparer les résultats renvoyés par ces différentes formulations en les confrontant aux résultats expérimentaux disponibles dans la littérature. Cela nous a permis d'une part de nous conforter dans l'utilisation de nos solveurs et sur la pertinence des résultats obtenus avec ces derniers et d'autre part de mettre en évidence les écarts entre les solutions renvoyées par chaque formulation. Fort de ce constat, nous avons souhaité évaluer l'impact de l'équation d'état utilisée pour relier l'enthalpie et la température, indispensable à la fermeture thermodynamique du système d'équations. Cette comparaison s'est faite par la… Advisors/Committee Members: Bedecarrats, Jean-Pierre (thesis director).

Subjects/Keywords: Stockage thermique; MCP; CFD; OpenFOAM; LHTES; PCM; CFD; OpenFOAM

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pernot, E. (2015). Modélisation du changement d’état solide-liquide. Application au stockage thermique par chaleur latente Adapté aux centrales solaires thermodynamiques : Modeling of the solid-liquid phase change. Application to the latent heat thermal energy storage Suitable for concentrated solar power plant. (Doctoral Dissertation). Pau. Retrieved from http://www.theses.fr/2015PAUU3044

Chicago Manual of Style (16^th Edition):

Pernot, Eric. “Modélisation du changement d’état solide-liquide. Application au stockage thermique par chaleur latente Adapté aux centrales solaires thermodynamiques : Modeling of the solid-liquid phase change. Application to the latent heat thermal energy storage Suitable for concentrated solar power plant.” 2015. Doctoral Dissertation, Pau. Accessed April 22, 2021. http://www.theses.fr/2015PAUU3044.

MLA Handbook (7^th Edition):

Pernot, Eric. “Modélisation du changement d’état solide-liquide. Application au stockage thermique par chaleur latente Adapté aux centrales solaires thermodynamiques : Modeling of the solid-liquid phase change. Application to the latent heat thermal energy storage Suitable for concentrated solar power plant.” 2015. Web. 22 Apr 2021.

Vancouver:

Pernot E. Modélisation du changement d’état solide-liquide. Application au stockage thermique par chaleur latente Adapté aux centrales solaires thermodynamiques : Modeling of the solid-liquid phase change. Application to the latent heat thermal energy storage Suitable for concentrated solar power plant. [Internet] [Doctoral dissertation]. Pau; 2015. [cited 2021 Apr 22]. Available from: http://www.theses.fr/2015PAUU3044.

Council of Science Editors:

Pernot E. Modélisation du changement d’état solide-liquide. Application au stockage thermique par chaleur latente Adapté aux centrales solaires thermodynamiques : Modeling of the solid-liquid phase change. Application to the latent heat thermal energy storage Suitable for concentrated solar power plant. [Doctoral Dissertation]. Pau; 2015. Available from: http://www.theses.fr/2015PAUU3044

Universidade Nova

18. Afonso, Diogo José Seita. Simulação numérica da interação de ondas com um quebra-mar poroso utilizando o código OpenFoam.

Degree: 2015, Universidade Nova

URL: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/14660

► O principal objetivo desta dissertação é explorar o potencial do código OpenFoam, no estudo de problemas de engenharia costeira, mais especificamente a interação de ondas… (more)

Subjects/Keywords: Quebra-mar; Meio poroso; OpenFoam; waves2Foam; IHFOAM

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APA (6^th Edition):

Afonso, D. J. S. (2015). Simulação numérica da interação de ondas com um quebra-mar poroso utilizando o código OpenFoam. (Thesis). Universidade Nova. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/14660

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Afonso, Diogo José Seita. “Simulação numérica da interação de ondas com um quebra-mar poroso utilizando o código OpenFoam.” 2015. Thesis, Universidade Nova. Accessed April 22, 2021. http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/14660.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Afonso, Diogo José Seita. “Simulação numérica da interação de ondas com um quebra-mar poroso utilizando o código OpenFoam.” 2015. Web. 22 Apr 2021.

Vancouver:

Afonso DJS. Simulação numérica da interação de ondas com um quebra-mar poroso utilizando o código OpenFoam. [Internet] [Thesis]. Universidade Nova; 2015. [cited 2021 Apr 22]. Available from: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/14660.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Afonso DJS. Simulação numérica da interação de ondas com um quebra-mar poroso utilizando o código OpenFoam. [Thesis]. Universidade Nova; 2015. Available from: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/14660

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Université Catholique de Louvain

19. Contino, Francesco. Combustion in homogeneous charge compression ignition engines : experimental analysis using ethyl esters and development of a method to include detailed chemistry in numerical simulations.

Degree: 2011, Université Catholique de Louvain

URL: http://hdl.handle.net/2078.1/75968

►

In the global energy context, many solutions are suggested to change our energy dependence and solve our CO2 emission issues. For transportation, biofuels are mentioned… (more)

▼

In the global energy context, many solutions are suggested to change our energy dependence and solve our CO2 emission issues. For transportation, biofuels are mentioned as a possible alternative to fossil fuels. Yet many people argue that they could hardly replace oil. The low efficiency of the conversion from biomass to biofuels implies other main issues like land use and food competition. More simple conversion routes, using less energy-consuming steps, could be used. However, the major drawback is then the lack of compatibility with conventional engines. Instead of adapting the fuel to the engines, the opposite has been put forward recently with the homogeneous charge compression ignition (HCCI). This engine does not intrinsically rely on specific fuel properties. Given that a fairly homogeneous air-fuel mixture is prepared, it can be operated on a large range of fuels. In the first part of this thesis, we analyzed the esters produced from fermentable wastes by a biochemical process. We investigated experimentally the impact of these esters on the HCCI. In practice, the development of new engine concepts and the characterization of fuels rely more and more on numerical simulations. However, the accurate and comprehensive modelling of the highly nonlinear combustion processes of realistic fuels is extremely demanding. It requires detailed mechanisms that involve hundreds of chemical species and thousands of elementary reactions. The computational cost of these simulations is generally prohibitive. This implies, first, that fairly detailed CFD simulations can only include global mechanisms, which only describe the main steps of the combustion; and second, that very detailed reaction mechanisms are mainly limited to simplified systems. In the second part of this thesis, we developed a new method that significantly mitigates the computational burden of detailed chemistry in complex CFD simulations. The developed numerical method, named tabulation of dynamic adaptive chemistry (TDAC), speeds the CFD simulations up to 900 times with a very small simulation error compared to the direct numerical integration of the combustion mechanisms.

(FSA 3) – UCL, 2011

Advisors/Committee Members: UCL - SST/IMMC/TFL - Thermodynamics and fluid mechanics, Jeanmart, Hervé, Gerin, Patrick, Winckelmans, Grégoire, Dias, Véronique, Bartosiewicz, Yann, Verhelst, Sebastian, Lucchini, Tommaso, Foucher, Fabrice.

Subjects/Keywords: HCCI; Ethyl ester; TDAC; ISAT; DAC; OpenFOAM

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Contino, F. (2011). Combustion in homogeneous charge compression ignition engines : experimental analysis using ethyl esters and development of a method to include detailed chemistry in numerical simulations. (Thesis). Université Catholique de Louvain. Retrieved from http://hdl.handle.net/2078.1/75968

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Contino, Francesco. “Combustion in homogeneous charge compression ignition engines : experimental analysis using ethyl esters and development of a method to include detailed chemistry in numerical simulations.” 2011. Thesis, Université Catholique de Louvain. Accessed April 22, 2021. http://hdl.handle.net/2078.1/75968.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Contino, Francesco. “Combustion in homogeneous charge compression ignition engines : experimental analysis using ethyl esters and development of a method to include detailed chemistry in numerical simulations.” 2011. Web. 22 Apr 2021.

Vancouver:

Contino F. Combustion in homogeneous charge compression ignition engines : experimental analysis using ethyl esters and development of a method to include detailed chemistry in numerical simulations. [Internet] [Thesis]. Université Catholique de Louvain; 2011. [cited 2021 Apr 22]. Available from: http://hdl.handle.net/2078.1/75968.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Contino F. Combustion in homogeneous charge compression ignition engines : experimental analysis using ethyl esters and development of a method to include detailed chemistry in numerical simulations. [Thesis]. Université Catholique de Louvain; 2011. Available from: http://hdl.handle.net/2078.1/75968

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

20. Petersson, Jens. CFD-analysis of buoyancy-driven flow inside a cooling pipe system attached to a reactor pressure vessel.

Degree: The Institute of Technology, 2014, Linköping UniversityLinköping University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-112796

► In this work a cooling system connected to a reactor pressure vessel has been studied using the CFD method for the purpose of investigating… (more)

▼ In this work a cooling system connected to a reactor pressure vessel has been studied using the CFD method for the purpose of investigating the strengths and shortcomings of using CFD as a tool in similar fluid flow problems within nuclear power plants. The cooling system is used to transport water of 288K (15°C) into a nuclear reactor vessel filled with water of about 555K (282°C) during certain operating scenarios. After the system has been used, the warm water inside the vessel will be carried into the cooling system by buoyancy forces. It was of interest to investigate how quickly the warm water moves into the cooling system and how the temperature field of the water changes over time. Using the open source CFD code OpenFOAM 2.3.x and the LES turbulence modelling method, a certain operating scenario of the cooling system was simulated. A simplified computational domain was created to represent the geometries of the downcomer region within the reactor pressure vessel and the pipe structure of the cooling system. Boundary conditions and other domain properties were chosen and motivated to represent the real scenario as good as possible. For the geometry, four computational grids of different sizes and design were generated. Three of these were generated using the ANSA pre-processing tool, and they all have the same general structure only with different cell sizes. The fourth grid was made by the OpenFOAM application snappyHexMesh, which automatically creates the volume mesh with little user input. It was found that for the case at hand, the different computational grids produced roughly the same results despite the number of cells ranging from 0,14M to 3,2M. A major difference between the simulations was the maximum size of the time steps which ranged from 0,3ms for the finest ANSA mesh to 2ms for the snappy mesh, a difference which has a large impact on the total time consumption of the simulations. Furthermore, a comparison of the CFD results was made with those of a simpler 1D thermal hydraulic code, Relap5. The difference in time consumption between the two analyses were of course large and it was found that although the CFD analysis provided more detailed information about the flow field, the cheaper 1D analysis managed to capture the important phenomena for this particular case. However, it cannot be guaranteed that the 1D analysis is sufficient for all similar flow scenarios as it may not always be able to sufficiently capture phenomena such as thermal shocks and sharp temperature gradients in the fluid. Regardless of whether the CFD method or a simpler analysis is used, conservativeness in the flow simulation results needs to be ensured. If the simplifications introduced in the computational models cannot be proved to always give conservative results, the final simulation results need to be modified to ensure conservativeness although no such modifications were made in this work.

Subjects/Keywords: CFD; OpenFOAM; LES; nuclear reactor pressure vessel

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Petersson, J. (2014). CFD-analysis of buoyancy-driven flow inside a cooling pipe system attached to a reactor pressure vessel. (Thesis). Linköping UniversityLinköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-112796

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Petersson, Jens. “CFD-analysis of buoyancy-driven flow inside a cooling pipe system attached to a reactor pressure vessel.” 2014. Thesis, Linköping UniversityLinköping University. Accessed April 22, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-112796.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Petersson, Jens. “CFD-analysis of buoyancy-driven flow inside a cooling pipe system attached to a reactor pressure vessel.” 2014. Web. 22 Apr 2021.

Vancouver:

Petersson J. CFD-analysis of buoyancy-driven flow inside a cooling pipe system attached to a reactor pressure vessel. [Internet] [Thesis]. Linköping UniversityLinköping University; 2014. [cited 2021 Apr 22]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-112796.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Petersson J. CFD-analysis of buoyancy-driven flow inside a cooling pipe system attached to a reactor pressure vessel. [Thesis]. Linköping UniversityLinköping University; 2014. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-112796

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

21. Schippers, M.M.A. (author). Incipient motion of sand and oil agglomerates: A numerical study on the mobility of particles under wave-induced forcing.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:3c81499e-17eb-4d77-9c86-a94df94a3eea

►

After the Deepwater Horizon oil spill in 2010, oil was released into the Gulf of Mexico and partly reached the shorelines. Here, it mixed with… (more)

▼

After the Deepwater Horizon oil spill in 2010, oil was released into the Gulf of Mexico and partly reached the shorelines. Here, it mixed with sand in the surf zone to form sand and oil agglomerates (SOAs). These cm-sized particles are heavier than water and are therefore found on the seabed. Years after the initial formation of these particles, they keep appearing on the beaches, despite earlier clean-up. Several studies to the formation and transport of these particles have been conducted, but traditional shear-stress based formula, which are generally used for sediment transport, do not predict the mobility of SOAs well. This study focuses on the incipient motion of SOAs and aims to propose an improved method of predicting SOA mobility under waves. Sliding and rotation are found to be the two governing mechanisms of incipient motion of SOAs. For both mechanisms and two particle shapes, spherical and disc-shaped, a mobility parameter is defined. A critical value of this parameter is derived from a force balance and moment of force balance and is a function of several parameters: the drag coefficient CD, the inertia coefficient CM, the lift coefficient CL, the location of the resulting forces relative to the point of rotation, the Keulegan-Carpenter number (KC), the friction coefficient and the relative distance of the point of rotation to the point of gravity. When the mobility number exceeds the critical value, initiation of motion of SOAs is expected. The forces on the object are simulated in 2DV with the CFD package OpenFOAM. The results of the numerical simulations indicate that the critical mobility parameter strongly correlates with the KC-number. For low KC-numbers, the inertia force has a significant contribution to the horizontal force and reduces the stability of the particles, so less hydrodynamic forcing is required for incipient motion. Sliding is the governing mechanism of incipient motion for disc-shaped particles, whereas rotation is expected for spherical particles. Burial reduces the mobility of the particle, as a smaller part of the particle disturbs the flow and soil pressures act as an additional stabilizing force. The results of this study can be applied to predict incipient motion of SOAs on a fixed bed. Due to the sensitivity of the mobility to SOA shape, density and diameter, a probabilistic method is recommended for predicting mobility of a collection of SOAs instead of a single particle.

Civil Engineering and Geosciences

Hydraulic Engineering

Advisors/Committee Members: Uijttewaal, W.S.J. (mentor), Jacobsen, N.G. (mentor), McCall, R.T. (mentor), Zijlema, M. (mentor), Weij, D. (mentor).

Subjects/Keywords: OpenFOAM; Sand- and oil agglomerates; Incipient motion

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Schippers, M. M. A. (. (2017). Incipient motion of sand and oil agglomerates: A numerical study on the mobility of particles under wave-induced forcing. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:3c81499e-17eb-4d77-9c86-a94df94a3eea

Chicago Manual of Style (16^th Edition):

Schippers, M M A (author). “Incipient motion of sand and oil agglomerates: A numerical study on the mobility of particles under wave-induced forcing.” 2017. Masters Thesis, Delft University of Technology. Accessed April 22, 2021. http://resolver.tudelft.nl/uuid:3c81499e-17eb-4d77-9c86-a94df94a3eea.

MLA Handbook (7^th Edition):

Schippers, M M A (author). “Incipient motion of sand and oil agglomerates: A numerical study on the mobility of particles under wave-induced forcing.” 2017. Web. 22 Apr 2021.

Vancouver:

Schippers MMA(. Incipient motion of sand and oil agglomerates: A numerical study on the mobility of particles under wave-induced forcing. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Apr 22]. Available from: http://resolver.tudelft.nl/uuid:3c81499e-17eb-4d77-9c86-a94df94a3eea.

Council of Science Editors:

Schippers MMA(. Incipient motion of sand and oil agglomerates: A numerical study on the mobility of particles under wave-induced forcing. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:3c81499e-17eb-4d77-9c86-a94df94a3eea

Delft University of Technology

22. Becker, Max (author). fastFoam - An aero-servo-elastic wind turbine simulation method based on CFD.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:a53b78ee-d5c3-41dc-85cf-1b9da36109f8

►

The current wind turbine design tools are based on aerodynamic simulations using blade element momentum (BEM) codes to calculate loads and power, see for instance… (more)

Subjects/Keywords: CFD; FSI; OpenFOAM; WInd turbine; Windenergy

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Becker, M. (. (2017). fastFoam - An aero-servo-elastic wind turbine simulation method based on CFD. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:a53b78ee-d5c3-41dc-85cf-1b9da36109f8

Chicago Manual of Style (16^th Edition):

Becker, Max (author). “fastFoam - An aero-servo-elastic wind turbine simulation method based on CFD.” 2017. Masters Thesis, Delft University of Technology. Accessed April 22, 2021. http://resolver.tudelft.nl/uuid:a53b78ee-d5c3-41dc-85cf-1b9da36109f8.

MLA Handbook (7^th Edition):

Becker, Max (author). “fastFoam - An aero-servo-elastic wind turbine simulation method based on CFD.” 2017. Web. 22 Apr 2021.

Vancouver:

Becker M(. fastFoam - An aero-servo-elastic wind turbine simulation method based on CFD. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Apr 22]. Available from: http://resolver.tudelft.nl/uuid:a53b78ee-d5c3-41dc-85cf-1b9da36109f8.

Council of Science Editors:

Becker M(. fastFoam - An aero-servo-elastic wind turbine simulation method based on CFD. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:a53b78ee-d5c3-41dc-85cf-1b9da36109f8

Delft University of Technology

23. Kadar, A.H. (author). Modelling Turbulent Non-Premixed Combustion in Industrial Furnaces.

Degree: 2015, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:8f3235ea-6efa-466e-9e48-9eda89bb04e7

► Measuring the temperature distribution inside the rotary kilns, using thermocouples for instance has proven to be difficult due to the harsh operating conditions of the… (more)

▼ Measuring the temperature distribution inside the rotary kilns, using thermocouples for instance has proven to be difficult due to the harsh operating conditions of the kiln. Numerical modelling of turbulent combustion and the associated physical phenomenon thus proves to be an indispensable tool towards predicting the kiln operating conditions. The purpose of the present work was to make a step towards modelling the cement rotary kiln used by Almatis B.V. in Rotterdam for the production of calcium-aluminate cement. The detailed mathematical model of the rotary kiln would be developed using the open source CFD toolbox OpenFOAM. The main advantage of OpenFOAM is that, contrary to most of the commercial CFD software, it is license fee free and allows access to the source code, which was also the motivation behind this work. To accurately model the Almatis kiln the following important phenomenon have to be taken into account: turbulent non-premixed combustion of hydrocarbon gases in the burner, radiative heat transfer distribution in the kiln and, the conjugate heat transfer through the furnace walls. In the present work the new solver implemented in OpenFOAM for turbulent combustion and radiation modelling was validated using the benchmark Sandia Flame D test case. There was good agreement seen between the results from simulations and experimental data for the Sandia Flame D test case indicating the adequacy and accuracy of the implemented transient solver and its readiness for further combustion application development. Due to the very complex geometry of the Almatis Kiln the relatively simple geometry of the Burner Flow Reactor (BFR) was considered for further simulations. The simulation results obtained for the Burner Flow Reactor (BFR) were compared with the commercial package ANSYS Fluent for consistency. The OpenFOAM toolbox was evaluated in two stages of increasing complexity: isothermal(cold) flow simulation and non-premixed gas combustion simulation using a turbulent incompressible flow solver. The cold flow comparison gave almost identical results for both OpenFOAM and ANSYS Fluent. However the reacting flow results showed varying agreement with ANSYS Fluent. The mass fraction of species showed good agreement but the temperature profile showed some deviations. With more stringent global NOx emission standards, predicting NOx formation in industrial furnaces is now a priority. The CFD modelling of pollutant NOx formation was considered in the present work. A new solver in OpenFOAM was developed for thermal NO prediction. The solver was validated with the ANSYS Fluent NOx post-processing utility using the Burner Flow Reactor geometry. The effectiveness of NOx reduction mechanisms including the variation of air to fuel equivalence ratio and flue gas re-circulation (FGR) was demonstrated using the Burner Flow Reactor test case. From this study it was concluded that OpenFOAM is a promising toolbox for modelling turbulent combustion and can be used for predicting the operating conditions of complex industrial… Advisors/Committee Members: Lahaye, D.J.P. (mentor), Vuik, C. (mentor), Keijzer, M. (mentor).

Subjects/Keywords: combustion; OpenFOAM; computational fluid dynamics; rotary kiln

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kadar, A. H. (. (2015). Modelling Turbulent Non-Premixed Combustion in Industrial Furnaces. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:8f3235ea-6efa-466e-9e48-9eda89bb04e7

Chicago Manual of Style (16^th Edition):

Kadar, A H (author). “Modelling Turbulent Non-Premixed Combustion in Industrial Furnaces.” 2015. Masters Thesis, Delft University of Technology. Accessed April 22, 2021. http://resolver.tudelft.nl/uuid:8f3235ea-6efa-466e-9e48-9eda89bb04e7.

MLA Handbook (7^th Edition):

Kadar, A H (author). “Modelling Turbulent Non-Premixed Combustion in Industrial Furnaces.” 2015. Web. 22 Apr 2021.

Vancouver:

Kadar AH(. Modelling Turbulent Non-Premixed Combustion in Industrial Furnaces. [Internet] [Masters thesis]. Delft University of Technology; 2015. [cited 2021 Apr 22]. Available from: http://resolver.tudelft.nl/uuid:8f3235ea-6efa-466e-9e48-9eda89bb04e7.

Council of Science Editors:

Kadar AH(. Modelling Turbulent Non-Premixed Combustion in Industrial Furnaces. [Masters Thesis]. Delft University of Technology; 2015. Available from: http://resolver.tudelft.nl/uuid:8f3235ea-6efa-466e-9e48-9eda89bb04e7

Delft University of Technology

24. Ter Hofstede, E. (author). Numerical Study of Fluid Structure Interaction in Nuclear Reactor Applications.

Degree: 2015, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:f60d989c-9101-4f6a-8817-4da09b2075f6

►

Flow-induced vibration (FIV) plays an important role in the nuclear industry. In nuclear power plants (NPP), the FIV may cause fatigue problems, stress corrosion cracking,… (more)

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Flow-induced vibration (FIV) plays an important role in the nuclear industry. In nuclear power plants (NPP), the FIV may cause fatigue problems, stress corrosion cracking, possible failure modes and fretting wear. This in return can lead to nuclear safety issues and substantial stand-still costs due to unplanned outages. It is therefore important to asses this phenomena early in the design process. Most of the experiments or analytical models used to predict FIV, are over simplified or cover only a single operation condition. Therefore using a combination of Computational Fluid Dynamics and Computational Solid Mechanics to model FIV can play an important role for the complex industrial applications. In the present work the numerical simulations are performed using the OpenFOAM Extend open source code, in which both the fluid and structural dynamics are computed using the Finite Volume (FV) method. Moreover, a partitioned approach was implemented, in which the exchanges between the fluid and structure solver take place. This was done through the use of the Interface Quasi Newton with Inverse Jacobian from a Least-Squares (IQN-ILS) coupling method. To gain the confidence of the available numerical methods, their validation is a necessary step that needs to be performed. Firstly the simulation of a well-known benchmark was performed using the IQN-ILS coupling method, where the deformation of an elastic flap, attached to a solid cylinder, is studied. Afterwards, the same coupling method was used to simulate the free vibration of a beam in a fluid and validated with experimental results. Lastly, the validated method was used to model the turbulence induced vibrations of a scaled version of a neutron flux measurement guide tube. From this study it has been found that the IQN-ILS coupling method can be used for strongly coupled problems. It has also been found that the mesh resolution and time step are important parameters for a correct estimation of the frequency and the damping of the oscillation.

Aerodynamics

Aerodynamics and Windenergy

Aerospace Engineering

Advisors/Committee Members: Van Zuijlen, A.H. (mentor), Shams, A. (mentor).

Subjects/Keywords: OpenFOAM; FSI; IQN-ILS; Nuclear Power Plants

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ter Hofstede, E. (. (2015). Numerical Study of Fluid Structure Interaction in Nuclear Reactor Applications. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:f60d989c-9101-4f6a-8817-4da09b2075f6

Chicago Manual of Style (16^th Edition):

Ter Hofstede, E (author). “Numerical Study of Fluid Structure Interaction in Nuclear Reactor Applications.” 2015. Masters Thesis, Delft University of Technology. Accessed April 22, 2021. http://resolver.tudelft.nl/uuid:f60d989c-9101-4f6a-8817-4da09b2075f6.

MLA Handbook (7^th Edition):

Ter Hofstede, E (author). “Numerical Study of Fluid Structure Interaction in Nuclear Reactor Applications.” 2015. Web. 22 Apr 2021.

Vancouver:

Ter Hofstede E(. Numerical Study of Fluid Structure Interaction in Nuclear Reactor Applications. [Internet] [Masters thesis]. Delft University of Technology; 2015. [cited 2021 Apr 22]. Available from: http://resolver.tudelft.nl/uuid:f60d989c-9101-4f6a-8817-4da09b2075f6.

Council of Science Editors:

Ter Hofstede E(. Numerical Study of Fluid Structure Interaction in Nuclear Reactor Applications. [Masters Thesis]. Delft University of Technology; 2015. Available from: http://resolver.tudelft.nl/uuid:f60d989c-9101-4f6a-8817-4da09b2075f6

Delft University of Technology

25. Sloof, Ben (author). Numerical modelling of sedimentation in Trailing Suction Hopper Dredgers.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:731efb55-25dc-4cfd-b972-368cea65a2e4

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Damen Dredging Equipment is a yard dedicated to the dredging industry. The yard specializes in the design, manufacture and supply of a wide variety of… (more)

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Damen Dredging Equipment is a yard dedicated to the dredging industry. The yard specializes in the design, manufacture and supply of a wide variety of dredging tools. One of the tools Damen offers is the Trailing Suction Hopper Dredger(TSHD). The performance of such a TSHD is described by its production: the amount of sediment loaded in the hopper per unit time. The overflow loss, the material lost overboard, can easily reach up to 30%, which causes a significant decrease of the production. In addition, the turbidity plume caused by these overflow losses can have a negative environmental impact. This turbidity plume reduces light penetration, clogs filter feeders, and disperses contaminants which can be attached to the sediment. Damen is interested in estimating and reducing these overflow losses. Different models to estimate the amount of material lost overboard exist. All these models have their pros and cons. The analytical model of Miedema & Vlasblom(1996) gives a quick and good estimate of the overflow losses, but gives no insight in the flow inside the hopper. The 2DV model of Van Rhee(2002) is able to accurately simulate the flow inside the hopper, but has a large computation time. The 2DV model of this thesis gives a good estimate of the overflow losses, gives insight in the flow inside the hopper, and has an acceptable computation time. The new 2DV model was developed in OpenFOAM. At the start of this thesis, it was possible to model mixture flow in OpenFOAM, but a sand bed could not be modelled yet. Several features had to be added to OpenFOAM to overcome this problem. The sand bed was regarded as a solid body inside the computational domain. To simulate the influence of this solid body on the mixture flow, boundary conditions were added at the bed interface. Sedimentation was modelled by adding a moving mesh. The closed flume experiments of Van Rhee(2002) have been used to validate that sedimentation is simulated accurately. By comparing hopper simulations with the hopper experiments of Van Rhee(2002), it was shown that the flow in the hopper was also simulated accurately. The computed overflow losses are, however, on the low side. The current version of OpenFOAM can calculate with only one particle fraction. In reality, the smaller fractions of the Particle Size Distribution are pushed upwards, causing the overflow losses to be higher. The 2DV-model gave a deeper insight to the phenomena in the hopper. It was possible to derive several equations which describe the flow in the hopper. With these new formulas, a simple phenomenological model was developed, which was named the 'Layer Model'.

OpenFOAM

Offshore and Dredging Engineering

Advisors/Committee Members: Keetels, Geert (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: sedimentation; hopper; OpenFOAM; CFD; overflow losses

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sloof, B. (. (2017). Numerical modelling of sedimentation in Trailing Suction Hopper Dredgers. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:731efb55-25dc-4cfd-b972-368cea65a2e4

Chicago Manual of Style (16^th Edition):

Sloof, Ben (author). “Numerical modelling of sedimentation in Trailing Suction Hopper Dredgers.” 2017. Masters Thesis, Delft University of Technology. Accessed April 22, 2021. http://resolver.tudelft.nl/uuid:731efb55-25dc-4cfd-b972-368cea65a2e4.

MLA Handbook (7^th Edition):

Sloof, Ben (author). “Numerical modelling of sedimentation in Trailing Suction Hopper Dredgers.” 2017. Web. 22 Apr 2021.

Vancouver:

Sloof B(. Numerical modelling of sedimentation in Trailing Suction Hopper Dredgers. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Apr 22]. Available from: http://resolver.tudelft.nl/uuid:731efb55-25dc-4cfd-b972-368cea65a2e4.

Council of Science Editors:

Sloof B(. Numerical modelling of sedimentation in Trailing Suction Hopper Dredgers. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:731efb55-25dc-4cfd-b972-368cea65a2e4

Delft University of Technology

26. Tatomir, Niko (author). Efficacy of Linearized Aerodynamic CFD Modeling for Flutter Computation.

Degree: 2019, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:9a1ffc92-ce09-4b11-bb9e-7a39501e0b88

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Aeroelastic stability must be maintained for the entire flight duration. Of the vast phenomena that fall under the field of aeroelasticity, flutter is the most… (more)

Subjects/Keywords: Unsteady Aerodynamics; Linearized Aerodynamic Model; Flutter; OpenFOAM

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tatomir, N. (. (2019). Efficacy of Linearized Aerodynamic CFD Modeling for Flutter Computation. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:9a1ffc92-ce09-4b11-bb9e-7a39501e0b88

Chicago Manual of Style (16^th Edition):

Tatomir, Niko (author). “Efficacy of Linearized Aerodynamic CFD Modeling for Flutter Computation.” 2019. Masters Thesis, Delft University of Technology. Accessed April 22, 2021. http://resolver.tudelft.nl/uuid:9a1ffc92-ce09-4b11-bb9e-7a39501e0b88.

MLA Handbook (7^th Edition):

Tatomir, Niko (author). “Efficacy of Linearized Aerodynamic CFD Modeling for Flutter Computation.” 2019. Web. 22 Apr 2021.

Vancouver:

Tatomir N(. Efficacy of Linearized Aerodynamic CFD Modeling for Flutter Computation. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Apr 22]. Available from: http://resolver.tudelft.nl/uuid:9a1ffc92-ce09-4b11-bb9e-7a39501e0b88.

Council of Science Editors:

Tatomir N(. Efficacy of Linearized Aerodynamic CFD Modeling for Flutter Computation. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:9a1ffc92-ce09-4b11-bb9e-7a39501e0b88

University of New Mexico

27. Porteous, Andrew. Unsteady Simulations of Flow Around a Smooth Circular Cylinder at Very High Reynolds Numbers Using OpenFOAM.

Degree: Mechanical Engineering, 2015, University of New Mexico

URL: http://hdl.handle.net/1928/30357

► The purpose of this study is to determine if unsteady formulations of RANS turbulence models lead to an improved description of incompressible turbulent flows. Wind… (more)

Subjects/Keywords: Computational Fluid Dynamics; OpenFOAM; Cylinder; URANS

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Porteous, A. (2015). Unsteady Simulations of Flow Around a Smooth Circular Cylinder at Very High Reynolds Numbers Using OpenFOAM. (Masters Thesis). University of New Mexico. Retrieved from http://hdl.handle.net/1928/30357

Chicago Manual of Style (16^th Edition):

Porteous, Andrew. “Unsteady Simulations of Flow Around a Smooth Circular Cylinder at Very High Reynolds Numbers Using OpenFOAM.” 2015. Masters Thesis, University of New Mexico. Accessed April 22, 2021. http://hdl.handle.net/1928/30357.

MLA Handbook (7^th Edition):

Porteous, Andrew. “Unsteady Simulations of Flow Around a Smooth Circular Cylinder at Very High Reynolds Numbers Using OpenFOAM.” 2015. Web. 22 Apr 2021.

Vancouver:

Porteous A. Unsteady Simulations of Flow Around a Smooth Circular Cylinder at Very High Reynolds Numbers Using OpenFOAM. [Internet] [Masters thesis]. University of New Mexico; 2015. [cited 2021 Apr 22]. Available from: http://hdl.handle.net/1928/30357.

Council of Science Editors:

Porteous A. Unsteady Simulations of Flow Around a Smooth Circular Cylinder at Very High Reynolds Numbers Using OpenFOAM. [Masters Thesis]. University of New Mexico; 2015. Available from: http://hdl.handle.net/1928/30357

28. Cruz, Matheus Altomare. Machine learning techniques for accuracy improvement of RANS simulations.

Degree: 2018, Universidade Federal do Rio de Janeiro; Programa de Pós-Graduação em Engenharia Mecânica; UFRJ; Brasil; Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia

URL: http://hdl.handle.net/11422/12152

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Submitted by Daniele Fonseca ([email protected]) on 2020-05-07T12:14:28Z No. of bitstreams: 1 MatheusAltomareCruz.pdf: 5025716 bytes, checksum: 254fede4d6db066655e2486354841058 (MD5)

Made available in DSpace on 2020-05-07T12:14:28Z (GMT). No.… (more)

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Submitted by Daniele Fonseca ([email protected]) on 2020-05-07T12:14:28Z No. of bitstreams: 1 MatheusAltomareCruz.pdf: 5025716 bytes, checksum: 254fede4d6db066655e2486354841058 (MD5)

Made available in DSpace on 2020-05-07T12:14:28Z (GMT). No. of bitstreams: 1 MatheusAltomareCruz.pdf: 5025716 bytes, checksum: 254fede4d6db066655e2486354841058 (MD5) Previous issue date: 2018-02

Há um grande número de escoamentos de interesse que são turbulentos. Como a Simulação Numérica Direta (DNS) e os experimentos são caros, o uso dos modelos RANS (Reynolds Average Navier-Stokes) torna-se uma necessidade. No entanto, tal abordagem possui pouca precisão. Este fato justifica a alta demanda por melhores modelos. Neste trabalho, uma técnica que usa o aprendizado de máquina, por meio de redes neurais, é usada para corrigir o modelo RANS κ - , considerando os dados DNS como ideais. As metodologias disponíveis na literatura empregam o tensor de tensão de Reynolds como a principal quantidade a ser corrigida. Uma vez que esta entidade é corrigida, o campo de velocidade é recalculado pelas equações de transporte RANS. Consequentemente, o campo de velocidade obtido se aproxima dos resultados de DNS. No entanto, no presente trabalho, essa metodologia é criticada devido à existência de incertezas no campo de tensões turbulentas fornecido pelos bancos de dados DNS. Sabe-se que os momentos estatísticos de segunda ordem (tensor de Reynolds) não são tão bem convergidos quanto os de primeira ordem (campos de velocidade e pressão médios) em simulações de DNS. Essas incertezas são propagadas e contaminam a velocidade média calculada a partir da mesma. Por esta razão, propõe-se, como nova metodologia, a correção do divergente do tensor de Reynolds, por ser é a única parte que de fato entra no balanço de momentum linear médio. Esta divergência pode ser calculada a partir dos campos de velocidade média e pressão, que são bem convergidos, utilizando a equação de balanço de quantidade de movimento linear médio. Os resultados obtidos até agora demonstraram que a correção do campo divergente das tensões turbulentas RANS é capaz de reconstruir os campos de velocidade média mais próximos do DNS do que a correção completa do tensor geralmente empregado na literatura.

There is a wide number of applications where the flow is turbulent. Since Direct Numerical Simulation (DNS) and experiments are expensive, the use of Reynolds Average Navier-Stokes (RANS) models is a necessity. However, the obtained models from this approach have low accuracy. This fact justifies the high demand for better models. In this work, a technique that uses machine learning, by means of neural networks, is used to correct the κ- RANS model considering the DNS data as ideal. The methodologies available in the literature employ the Reynolds stress tensor as the main quantity to be corrected. Once this entity is corrected, the velocity field is recalculated by the RANS transport equations. Consequently, the obtained velocity field gets closer to DNS results. However, in the present…

Advisors/Committee Members: http://lattes.cnpq.br/4870003562574001, Bodstein, Gustavo Cesar Rachid, Silveira Neto, Aristeu da, Thompson, Roney Leon.

Subjects/Keywords: CNPQ::ENGENHARIAS::ENGENHARIA MECANICA; Fluxos turbulentos; OpenFOAM

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cruz, M. A. (2018). Machine learning techniques for accuracy improvement of RANS simulations. (Masters Thesis). Universidade Federal do Rio de Janeiro; Programa de Pós-Graduação em Engenharia Mecânica; UFRJ; Brasil; Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia. Retrieved from http://hdl.handle.net/11422/12152

Chicago Manual of Style (16^th Edition):

Cruz, Matheus Altomare. “Machine learning techniques for accuracy improvement of RANS simulations.” 2018. Masters Thesis, Universidade Federal do Rio de Janeiro; Programa de Pós-Graduação em Engenharia Mecânica; UFRJ; Brasil; Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia. Accessed April 22, 2021. http://hdl.handle.net/11422/12152.

MLA Handbook (7^th Edition):

Cruz, Matheus Altomare. “Machine learning techniques for accuracy improvement of RANS simulations.” 2018. Web. 22 Apr 2021.

Vancouver:

Cruz MA. Machine learning techniques for accuracy improvement of RANS simulations. [Internet] [Masters thesis]. Universidade Federal do Rio de Janeiro; Programa de Pós-Graduação em Engenharia Mecânica; UFRJ; Brasil; Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia; 2018. [cited 2021 Apr 22]. Available from: http://hdl.handle.net/11422/12152.

Council of Science Editors:

Cruz MA. Machine learning techniques for accuracy improvement of RANS simulations. [Masters Thesis]. Universidade Federal do Rio de Janeiro; Programa de Pós-Graduação em Engenharia Mecânica; UFRJ; Brasil; Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia; 2018. Available from: http://hdl.handle.net/11422/12152

Delft University of Technology

29. Patil, Akshay (author). Numerical investigation of nearshore wave transformation and surf zone hydrodynamics.

Degree: 2019, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:1b6037cf-6cb9-4ebf-b9c2-25e7fa6cf575

► Rapid climate change and the corresponding estimated sea level rise can affect the performance of the coastal defense structures such as breakwaters, seawalls, and dikes.… (more)

▼ Rapid climate change and the corresponding estimated sea level rise can affect the performance of the coastal defense structures such as breakwaters, seawalls, and dikes. In order to improve these coastal defenses, a detailed understanding of the processes which contribute to wave run-up and overtopping over the coastal defenses needs to be established. Following the exponential growth of computing capacity around 1970’s, a wide variety of computational models were developed to study fluid flow. Traditionally, three computational paradigms have existed in order to study wave transformation and surf zone hydrodynamics: phase averaged models, phase resolving models, and Computational Fluid Dynamics (CFD) models. Limitations posed by the underlying linear wave theory in phase averaged and other simplifications in the phase resolving models, may not provide sufficient detail in wave breaking, wave energy dissipation, wave run-up, wave overtopping, and potentially other detailed hydrodynamic processes. This lack of resolution in depth averaged models for wave-breaking, wave run-up, and wave overtopping processes motivates a detailed investigation using CFD based models, which can correctly mimic wave-breaking and other hydrodynamic processes. The recent growth in available computational capacity has greatly improved the applicability of CFD based models for large scale transient flows such as waves near a coast. Additionally, the developments in wave generation and wave absorption boundary conditions by Jacobsen et al. [2012] in the open-source CFD toolbox OpenFOAM, have facilitated the use of OpenFOAM in coastal engineering applications. This encourages investigating the coastal environment using relatively complex models, thus providing insights into fundamental processes which contribute to coastal safety. To that end, this thesis focuses on investigating wave overtopping and the underlying processes which contribute to the aforementioned hydrodynamic aspects. Overtopping demands accurate capture of the free surface (interface between water and air). The waveFoam solver suffers from numerical diffusion of the interface, consequently requiring a different approach to mimic the sharp interface. In order to cater to this deficiency, a new solver which combines the capabilities of waveFoam [Jacobsen et al., 2012] and isoAdvection [Røenby et al., 2016] which has the ability to capture sharp interfaces by means of a sub-grid approach has been integrated (waveFlow) and used in this study. In addition to the new solver, a new set of Reynolds Averaged Navier-Stokes (RANS) closures developed by Larsen and Fuhrman [2018] for wave modeling applications have been employed to correctly capture turbulence levels under breaking waves. The preliminary steps include calibrating and assessment of the newly integrated waveFlow solver. Using a relatively simple conceptual test case, a comparison of the free surface behavior and overtopping discharge was carried out. This calibration test was followed by a comparison of… Advisors/Committee Members: Reniers, Ad (mentor), Bricker, Jeremy (graduation committee), Lashley, Chris (graduation committee), Jacobsen, Niels G. (graduation committee), Lowe, Ryan J. (graduation committee), Oosterlo, Patrick (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: OpenFOAM; isoAdvection; Wave Breaking; Overtopping; CFD; Turbulence

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Patil, A. (. (2019). Numerical investigation of nearshore wave transformation and surf zone hydrodynamics. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:1b6037cf-6cb9-4ebf-b9c2-25e7fa6cf575

Chicago Manual of Style (16^th Edition):

Patil, Akshay (author). “Numerical investigation of nearshore wave transformation and surf zone hydrodynamics.” 2019. Masters Thesis, Delft University of Technology. Accessed April 22, 2021. http://resolver.tudelft.nl/uuid:1b6037cf-6cb9-4ebf-b9c2-25e7fa6cf575.

MLA Handbook (7^th Edition):

Patil, Akshay (author). “Numerical investigation of nearshore wave transformation and surf zone hydrodynamics.” 2019. Web. 22 Apr 2021.

Vancouver:

Patil A(. Numerical investigation of nearshore wave transformation and surf zone hydrodynamics. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Apr 22]. Available from: http://resolver.tudelft.nl/uuid:1b6037cf-6cb9-4ebf-b9c2-25e7fa6cf575.

Council of Science Editors:

Patil A(. Numerical investigation of nearshore wave transformation and surf zone hydrodynamics. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:1b6037cf-6cb9-4ebf-b9c2-25e7fa6cf575

30. Inverneiro, Paulo Alexandre dos Santos. Simulação de sistema de desenfumagem de parques de estacionamento recorrendo ao programa OpenFOAM.

Degree: 2013, Instituto Politécnico do Porto

URL: https://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/6274

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Os parques de estacionamento cobertos estão obrigados por legislação a terem sistemas de desenfumagem. Assim, nesta dissertação desenvolve-se um procedimento computacional para a analise e… (more)

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Os parques de estacionamento cobertos estão obrigados por legislação a terem sistemas de desenfumagem. Assim, nesta dissertação desenvolve-se um procedimento computacional para a analise e verificação de funcionamento de sistemas de desenfumagem com ventiladores de impulso para parques de estacionamento, recorrendo ao software de mecânica dos fluidos computacional OpenFOAM. Actualmente nos sistemas de desenfumagem de parques de estacionamento estão a ser aplicados ventiladores de impulso. Este tipo de ventiladores não estão contemplados pela legislação em vigor. Assim, para serem utilizados é necessário verificar se estes podem substituir as redes de condutas. A verificação do funcionamento de sistemas de desenfumagem com ventiladores de impulso e efectuada com recurso a programas de simulação de mecânica dos fluidos computacional. O software OpenFOAM não tem tutoriais para ventiladores de impulso. Assim, foi executado um procedimento para validação dos ventiladores de impulso. A validação consistiu em reproduzir-se uma experiência executada por Giesen et al. (2011). Executaram-se várias simulações com diferentes modelos de turbulência, verificando-se que o programa buoyantpimplefoam do software OpenFOAM ao utilizar o modelo de turbulência k -ɛ simulou quase na perfeição os ventiladores de impulso. O desenvolvimento do procedimento computacional foi executado para um parque de estacionamento com uma geometria bastante complexa. O parque de estacionamento foi criado com um software em 3D e posteriormente inserido numa malha j a criada com as dimensões exteriores do parque. Foram estipuladas as condições de fronteira e executou-se uma simulação de seiscentos segundos com parâmetros determinados previamente. O processamento da simulação teve a duração de aproximadamente oito dias. Dos resultados obtidos concluiu-se que o procedimento computacional apresentado simula adequadamente sistemas de desenfumagem em parques de estacionamento.

Covered car parks are obliged by legislation to have smoke control systems. Thus, this dissertation develops a computational procedure for the analysis and verification of operation of smoke control systems with jet fans for car parks, using the computational fluid dynamics software OpenFOAM. Currently jet fans are being applied in smoke control systems for car parks. This type of fans are not covered by existing legislation. Thus, for use it is necessary to determine whether these can replace ducts networks. The verification of operation of smoke control system with jet fans is made by simulation programs of computational fluid dynamics. The OpenFOAM software does not have tutorials for jet fans. Thus, it was performed a procedure for validating the jet fans. The validation consisted in reproduce an experiment performed by Giesen et al. (2011). Several simulations were executed using different turbulence models and it was verified that the program buoyantpimplefoam of software OpenFOAM using the k - ε turbulence model, simulated almost perfectly jet fans. The development of the…

Advisors/Committee Members: Castro, Aristides, Sarmento, Isabel.

Subjects/Keywords: OpenFOAM; Parque de Estacionamento; Desenfumagem; Ventilador de Impulso; OpenFOAM; Car Park; Smoke Control; Jet Fan

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Inverneiro, P. A. d. S. (2013). Simulação de sistema de desenfumagem de parques de estacionamento recorrendo ao programa OpenFOAM. (Thesis). Instituto Politécnico do Porto. Retrieved from https://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/6274

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Inverneiro, Paulo Alexandre dos Santos. “Simulação de sistema de desenfumagem de parques de estacionamento recorrendo ao programa OpenFOAM.” 2013. Thesis, Instituto Politécnico do Porto. Accessed April 22, 2021. https://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/6274.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Inverneiro, Paulo Alexandre dos Santos. “Simulação de sistema de desenfumagem de parques de estacionamento recorrendo ao programa OpenFOAM.” 2013. Web. 22 Apr 2021.

Vancouver:

Inverneiro PAdS. Simulação de sistema de desenfumagem de parques de estacionamento recorrendo ao programa OpenFOAM. [Internet] [Thesis]. Instituto Politécnico do Porto; 2013. [cited 2021 Apr 22]. Available from: https://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/6274.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Inverneiro PAdS. Simulação de sistema de desenfumagem de parques de estacionamento recorrendo ao programa OpenFOAM. [Thesis]. Instituto Politécnico do Porto; 2013. Available from: https://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/6274

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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Open Access Theses and Dissertations