subject:(fluid simulation)

Oregon State University

1. Neill, Patrick. Fluid flow on interacting, deformable surfaces.

Degree: MS, Computer Science, 2008, Oregon State University

URL: http://hdl.handle.net/1957/8929

► Fluid simulation is an interesting research problem with a wide range of applications including mechanical engineering, special effects in movies and games, and scientific simulation.… (more)

Subjects/Keywords: Computational Fluid Dynamics; Fluid dynamics – Computer simulation

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APA (6^th Edition):

Neill, P. (2008). Fluid flow on interacting, deformable surfaces. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/8929

Chicago Manual of Style (16^th Edition):

Neill, Patrick. “Fluid flow on interacting, deformable surfaces.” 2008. Masters Thesis, Oregon State University. Accessed March 08, 2021. http://hdl.handle.net/1957/8929.

MLA Handbook (7^th Edition):

Neill, Patrick. “Fluid flow on interacting, deformable surfaces.” 2008. Web. 08 Mar 2021.

Vancouver:

Neill P. Fluid flow on interacting, deformable surfaces. [Internet] [Masters thesis]. Oregon State University; 2008. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/1957/8929.

Council of Science Editors:

Neill P. Fluid flow on interacting, deformable surfaces. [Masters Thesis]. Oregon State University; 2008. Available from: http://hdl.handle.net/1957/8929

Universiteit Utrecht

2. Kontaxis, C. Fluid Simulation for Computer Graphics.

Degree: 2013, Universiteit Utrecht

URL: http://dspace.library.uu.nl:8080/handle/1874/273891

► Fluid simulation for computer graphics is a special part of Computational Fluid Dynamics (CFD) which is used in graphics applications to generate realistic representations of… (more)

▼ Fluid simulation for computer graphics is a special part of Computational Fluid Dynamics (CFD) which is used in graphics applications to generate realistic representations of different types of fluids such as water, smoke etc. The main difference between applications in computer graphics and more general CFD applications is that the results do not need to be physically correct as long as they seem convincing and visually appealing to the human observer. Computer graphics applications range from real-time simulations that are integrated in computer games and completely off-line ultra realistic simulations that are mostly used in special effects in the movie industry. In this Master's Thesis we will focus on the Computer Graphics applications of fluid simulation used in the movie industry. We develop a three dimensional fluid simulator, which uses a staggered grid and follows the Eulerian viewpoint together with a semi-Lagrangian advection technique. MICCG(0) (modified incomplete Cholesky conjugate gradient, level zero) is used for the pressure projection. Different methods to track the fluid are implemented, including marker particles, level set method and particle level set method. The interaction between solids and fluid is possible under a fluid-solid coupling technique. The scenes are rendered using pbrt and Robert Bridson's grid-based implicit surface shape plugin for pbrt. Each frame of a simulation that follows the Eulerian viewpoint usually takes several seconds to be computed. As result of this, we focused our efforts into researching what parts delay the simulation the most. Once these parts are identified we propose some methods to deal with these bottlenecks and speed up the simulation. For this purpose, we propose a new hybrid-grid structure, instead of the standard regular grid usually used in this type of simulations, in order to decrease the number of computations needed. Furthermore, we add multi-threading at some time consuming parts of the simulation to further optimize performance. Finally, we combine the two above methods to acquire the highest performance increase featured among our contributions. Advisors/Committee Members: Tan, R. T..

Subjects/Keywords: Fluid Simulation; Computer Graphics

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

APA (6^th Edition):

Kontaxis, C. (2013). Fluid Simulation for Computer Graphics. (Masters Thesis). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/273891

Chicago Manual of Style (16^th Edition):

Kontaxis, C. “Fluid Simulation for Computer Graphics.” 2013. Masters Thesis, Universiteit Utrecht. Accessed March 08, 2021. http://dspace.library.uu.nl:8080/handle/1874/273891.

MLA Handbook (7^th Edition):

Kontaxis, C. “Fluid Simulation for Computer Graphics.” 2013. Web. 08 Mar 2021.

Vancouver:

Kontaxis C. Fluid Simulation for Computer Graphics. [Internet] [Masters thesis]. Universiteit Utrecht; 2013. [cited 2021 Mar 08]. Available from: http://dspace.library.uu.nl:8080/handle/1874/273891.

Council of Science Editors:

Kontaxis C. Fluid Simulation for Computer Graphics. [Masters Thesis]. Universiteit Utrecht; 2013. Available from: http://dspace.library.uu.nl:8080/handle/1874/273891

3. Arno in Wolde Luebke. daptive Particle Splitting Based on Turbulence Energy for Fluid Simulations on GPUs : GPUを用いた乱流エネルギーに基づく高精細液体シミュレーションのための適応的粒子分割; GPU オモチイタランリュウエネルギーニモトズクコウセイサイエキタイシミュレーションノタメノテキオウテキリュウシブンカツ.

Degree: Nara Institute of Science and Technology / 奈良先端科学技術大学院大学

URL: http://hdl.handle.net/10061/9182

Subjects/Keywords: Fluid Simulation

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APA (6^th Edition):

Luebke, A. i. W. (n.d.). daptive Particle Splitting Based on Turbulence Energy for Fluid Simulations on GPUs : GPUを用いた乱流エネルギーに基づく高精細液体シミュレーションのための適応的粒子分割; GPU オモチイタランリュウエネルギーニモトズクコウセイサイエキタイシミュレーションノタメノテキオウテキリュウシブンカツ. (Thesis). Nara Institute of Science and Technology / 奈良先端科学技術大学院大学. Retrieved from http://hdl.handle.net/10061/9182

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Luebke, Arno in Wolde. “daptive Particle Splitting Based on Turbulence Energy for Fluid Simulations on GPUs : GPUを用いた乱流エネルギーに基づく高精細液体シミュレーションのための適応的粒子分割; GPU オモチイタランリュウエネルギーニモトズクコウセイサイエキタイシミュレーションノタメノテキオウテキリュウシブンカツ.” Thesis, Nara Institute of Science and Technology / 奈良先端科学技術大学院大学. Accessed March 08, 2021. http://hdl.handle.net/10061/9182.

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Luebke, Arno in Wolde. “daptive Particle Splitting Based on Turbulence Energy for Fluid Simulations on GPUs : GPUを用いた乱流エネルギーに基づく高精細液体シミュレーションのための適応的粒子分割; GPU オモチイタランリュウエネルギーニモトズクコウセイサイエキタイシミュレーションノタメノテキオウテキリュウシブンカツ.” Web. 08 Mar 2021.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Vancouver:

Luebke AiW. daptive Particle Splitting Based on Turbulence Energy for Fluid Simulations on GPUs : GPUを用いた乱流エネルギーに基づく高精細液体シミュレーションのための適応的粒子分割; GPU オモチイタランリュウエネルギーニモトズクコウセイサイエキタイシミュレーションノタメノテキオウテキリュウシブンカツ. [Internet] [Thesis]. Nara Institute of Science and Technology / 奈良先端科学技術大学院大学; [cited 2021 Mar 08]. Available from: http://hdl.handle.net/10061/9182.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

Council of Science Editors:

Luebke AiW. daptive Particle Splitting Based on Turbulence Energy for Fluid Simulations on GPUs : GPUを用いた乱流エネルギーに基づく高精細液体シミュレーションのための適応的粒子分割; GPU オモチイタランリュウエネルギーニモトズクコウセイサイエキタイシミュレーションノタメノテキオウテキリュウシブンカツ. [Thesis]. Nara Institute of Science and Technology / 奈良先端科学技術大学院大学; Available from: http://hdl.handle.net/10061/9182

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

University of Toronto

4. Bejatovic, Sintia. Evaluation of Discrete Explicit Filtering for an Approximate Deconvolution Approach to LES.

Degree: 2011, University of Toronto

URL: http://hdl.handle.net/1807/27324

►

In the study of computational turbulence, the success of Large Eddy Simulation (LES) is largely determined by the quality of the sub-filter scale (SFS) model… (more)

Subjects/Keywords: Fluid Dynamics; Numerical Simulation; 0538

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APA (6^th Edition):

Bejatovic, S. (2011). Evaluation of Discrete Explicit Filtering for an Approximate Deconvolution Approach to LES. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/27324

Chicago Manual of Style (16^th Edition):

Bejatovic, Sintia. “Evaluation of Discrete Explicit Filtering for an Approximate Deconvolution Approach to LES.” 2011. Masters Thesis, University of Toronto. Accessed March 08, 2021. http://hdl.handle.net/1807/27324.

MLA Handbook (7^th Edition):

Bejatovic, Sintia. “Evaluation of Discrete Explicit Filtering for an Approximate Deconvolution Approach to LES.” 2011. Web. 08 Mar 2021.

Vancouver:

Bejatovic S. Evaluation of Discrete Explicit Filtering for an Approximate Deconvolution Approach to LES. [Internet] [Masters thesis]. University of Toronto; 2011. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/1807/27324.

Council of Science Editors:

Bejatovic S. Evaluation of Discrete Explicit Filtering for an Approximate Deconvolution Approach to LES. [Masters Thesis]. University of Toronto; 2011. Available from: http://hdl.handle.net/1807/27324

5. Gupta, Ashish. Preconditioning methods for ideal and multiphase fluid flows.

Degree: 2013, University of Tennessee – Chattanooga

URL: https://scholar.utc.edu/theses/279

► The objective of this study is to develop a preconditioning method for ideal and multiphase multispecies compressible fluid flow solver using homogeneous equilibrium mixture model.… (more)

▼ The objective of this study is to develop a preconditioning method for ideal and multiphase multispecies compressible fluid flow solver using homogeneous equilibrium mixture model. The mathematical model for fluid flow going through phase change uses density and temperature in the formulation, where the density represents the multiphase mixture density. The change of phase of the fluid is then explicitly determined using the equation of state of the fluid, which only requires temperature and mixture density. The method developed is based on a finite-volume framework in which the numerical fluxes are computed using Roe’s [1] approximate Riemann solver and the modified Harten, Lax and Van-leer scheme (HLLC) [2]. All speed Roe and HLLC flux based schemes have been developed either by using preconditioning or by directly modifying dissipation to reduce the effect of acoustic speed in its numerical dissipation when Mach number decreases. Preconditioning proposed by Briley, Taylor and Whitfield [3], Eriksson [4] and Turkel [5] are studied in this research, where as low dissipation schemes proposed by Rieper [6] and Thornber, Mosedale, Drikakis, Youngs and Williams [7] are also considered. Various preconditioners are evaluated in terms of development, performance, accuracy and limitations in simulations at various Mach numbers. A generalized preconditioner is derived which possesses well conditioned eigensystem for multiphase multispecies flow simulations. Validation and verification of the solution procedure are carried out on several small model problems with comparison to experimental, theoretical, and other numerical results. Preconditioning methods are evaluated using three basic geometries; 1) bump in a channel 2) flow over a NACA0012 airfoil and 3) flow over a cylinder, which are then compared with theoretical and numerical results. Multiphase capabilities of the solver are evaluated in cryogenic and non-cryogenic conditions. For cryogenic conditions the solver is evaluated by predicting cavitation on two basic geometries for which experimental data are available, that is, flow over simple foil and a quarter caliber hydrofoil in a tunnel using liquid nitrogen as a fluid. For non-cryogenic conditions, water near boiling conditions is used to predict cavitation on two simple geometries, that is, flow over simple foil in a tunnel and flow over a one caliber ogive. Cavitation predictions in both cryogenic and non-cryogenic cases are shows to agree well with available experimental data. Advisors/Committee Members: Sreenivas, Kidambi, Briley, W. Roger, Anderson, W. Kyle, Taylor, Lafayette K., Hyams, Daniel G., Matthews, John V., III, College of Engineering and Computer Science.

Subjects/Keywords: Fluid dynamics – Computer simulation

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

APA (6^th Edition):

Gupta, A. (2013). Preconditioning methods for ideal and multiphase fluid flows. (Doctoral Dissertation). University of Tennessee – Chattanooga. Retrieved from https://scholar.utc.edu/theses/279

Chicago Manual of Style (16^th Edition):

Gupta, Ashish. “Preconditioning methods for ideal and multiphase fluid flows.” 2013. Doctoral Dissertation, University of Tennessee – Chattanooga. Accessed March 08, 2021. https://scholar.utc.edu/theses/279.

MLA Handbook (7^th Edition):

Gupta, Ashish. “Preconditioning methods for ideal and multiphase fluid flows.” 2013. Web. 08 Mar 2021.

Vancouver:

Gupta A. Preconditioning methods for ideal and multiphase fluid flows. [Internet] [Doctoral dissertation]. University of Tennessee – Chattanooga; 2013. [cited 2021 Mar 08]. Available from: https://scholar.utc.edu/theses/279.

Council of Science Editors:

Gupta A. Preconditioning methods for ideal and multiphase fluid flows. [Doctoral Dissertation]. University of Tennessee – Chattanooga; 2013. Available from: https://scholar.utc.edu/theses/279

University of Minnesota

6. Komives, Jeffrey. Development and Validation of a Turbulence Wall Model for Compressible Flows with Heat Transfer.

Degree: PhD, Aerospace Engineering and Mechanics, 2016, University of Minnesota

URL: http://hdl.handle.net/11299/182810

► The computational cost to model high Reynolds number flows of engineering interest scales poorly with problem size and is excessively expensive. This fact motivates the… (more)

Subjects/Keywords: Computational Fluid Dynamics; Fluid Dynamics; Large Eddy Simulation; Simulation; Turbulence

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APA (6^th Edition):

Komives, J. (2016). Development and Validation of a Turbulence Wall Model for Compressible Flows with Heat Transfer. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/182810

Chicago Manual of Style (16^th Edition):

Komives, Jeffrey. “Development and Validation of a Turbulence Wall Model for Compressible Flows with Heat Transfer.” 2016. Doctoral Dissertation, University of Minnesota. Accessed March 08, 2021. http://hdl.handle.net/11299/182810.

MLA Handbook (7^th Edition):

Komives, Jeffrey. “Development and Validation of a Turbulence Wall Model for Compressible Flows with Heat Transfer.” 2016. Web. 08 Mar 2021.

Vancouver:

Komives J. Development and Validation of a Turbulence Wall Model for Compressible Flows with Heat Transfer. [Internet] [Doctoral dissertation]. University of Minnesota; 2016. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/11299/182810.

Council of Science Editors:

Komives J. Development and Validation of a Turbulence Wall Model for Compressible Flows with Heat Transfer. [Doctoral Dissertation]. University of Minnesota; 2016. Available from: http://hdl.handle.net/11299/182810

7. Mamet, Victorien. Modélisation multiphysique de différentes phases de l'électro-aérospray : de la génération à l'atomisation : Multiphysical modeling of the different steps of an electro-pneumo-hydrodynamical atomization device : From generation to nebulization.

Degree: Docteur es, Mécanique des fluides Energétique, Procédés, 2019, Université Grenoble Alpes (ComUE)

URL: http://www.theses.fr/2019GREAI002

►

Afin de lutter contre les allergies alimentaires, la société pharmaceutique DBV Technologies propose un patch épicutané permettant un traitement efficace, la plateforme Viaskin ®.Pour envisager… (more)

▼

Afin de lutter contre les allergies alimentaires, la société pharmaceutique DBV Technologies propose un patch épicutané permettant un traitement efficace, la plateforme Viaskin ®.Pour envisager de nouveaux moyens de production de ce patch, nous avons étudié dans cette thèse le procédé d'aérospray (AS).Pour cela, nous avons développé des modèles numériques des différentes parties spatiales de l'AS.Dans un premier temps, nous étudions le cône de liquide formé à la sortie de buse d'AS. L'approche diphasique est traitée à l'aide de la méthode de champ de phase (dite à interface diffuse), dans laquelle l'équation de Cahn-Hilliard gouverne la fonctionnelle d'interface.Deux régimes principaux sont identifiés : le régime Stationnaire Dynamique, où le cône de liquide est stable, et le régime Transitoire, où sa dynamique est périodique.Dans ce second régime, les résultats du modèle ont montré une évolution discontinue de la période d'oscillation du cône en fonction du débit liquide. Nous avons corrélé ce phénomène avec des oscillations capillaires du cône, et comparé avec succès les résultats des simulations numériques aux résultats expérimentaux.Dans un second temps, la fragmentation du jet de liquide produit par le cône est étudiée numériquement, et comparée aux résultats d'analyses de stabilité linéaire produites dans la littérature. Le modèle proposé est une méthode utilisant un maillage mobile, à interface nette.Nous avons montré que la taille des gouttelettes produites variait peu en fonction de la pression de gaz appliquée.L'ensemble des travaux permet de comprendre les phénomènes physiques sous-jacents à l'AS, et à sélectionner dans une optique industrielle les modes optimaux de fonctionnement.

In order to fight against food allergies, the pharmaceutical company DBV Technologies offers an epicutaneous patch for effective treatment, the Viaskin ® platform.To consider new ways of producing this patch, we studied in this thesis the aerospray (AS) process.For this, we have developed numerical models of the different spatial parts of the AS.First, we study the cone of liquid formed at the nozzle exit of AS. The two-phase approach is processed using the so-called diffuse interface phase field method, in which the Cahn-Hilliard equation governs the interface functional.Two main regimes are identified: the Stationary Dynamic flow regime, where the liquid cone is stable, and the Transient regime, where its motion is periodic.In this second regime, the results of the model showed a discontinuous evolution of the oscillation period of the cone as a function of the liquid flow. We have correlated this phenomenon with capillary oscillations of the cone, and successfully compared the results of the numerical simulations to the experimental results.In a second time, the fragmentation of the liquid jet produced by the cone is studied numerically, and compared to the results of linear stability analyzes produced in the literature. The proposed model is a method using a mobile mesh, with a net interface.We have shown that the size of…

Advisors/Committee Members: Dedulle, Jean-Marc (thesis director).

Subjects/Keywords: Simulation numérique; Modélisation; Modélisation; Fluid Dynamics; Simulation; Simulation; 620

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APA (6^th Edition):

Mamet, V. (2019). Modélisation multiphysique de différentes phases de l'électro-aérospray : de la génération à l'atomisation : Multiphysical modeling of the different steps of an electro-pneumo-hydrodynamical atomization device : From generation to nebulization. (Doctoral Dissertation). Université Grenoble Alpes (ComUE). Retrieved from http://www.theses.fr/2019GREAI002

Chicago Manual of Style (16^th Edition):

Mamet, Victorien. “Modélisation multiphysique de différentes phases de l'électro-aérospray : de la génération à l'atomisation : Multiphysical modeling of the different steps of an electro-pneumo-hydrodynamical atomization device : From generation to nebulization.” 2019. Doctoral Dissertation, Université Grenoble Alpes (ComUE). Accessed March 08, 2021. http://www.theses.fr/2019GREAI002.

MLA Handbook (7^th Edition):

Mamet, Victorien. “Modélisation multiphysique de différentes phases de l'électro-aérospray : de la génération à l'atomisation : Multiphysical modeling of the different steps of an electro-pneumo-hydrodynamical atomization device : From generation to nebulization.” 2019. Web. 08 Mar 2021.

Vancouver:

Mamet V. Modélisation multiphysique de différentes phases de l'électro-aérospray : de la génération à l'atomisation : Multiphysical modeling of the different steps of an electro-pneumo-hydrodynamical atomization device : From generation to nebulization. [Internet] [Doctoral dissertation]. Université Grenoble Alpes (ComUE); 2019. [cited 2021 Mar 08]. Available from: http://www.theses.fr/2019GREAI002.

Council of Science Editors:

Mamet V. Modélisation multiphysique de différentes phases de l'électro-aérospray : de la génération à l'atomisation : Multiphysical modeling of the different steps of an electro-pneumo-hydrodynamical atomization device : From generation to nebulization. [Doctoral Dissertation]. Université Grenoble Alpes (ComUE); 2019. Available from: http://www.theses.fr/2019GREAI002

8. SVENSSON, AXEL. Physically-Based Animation of Fire for Android .

Degree: Chalmers tekniska högskola / Institutionen för data och informationsteknik, 2020, Chalmers University of Technology

URL: http://hdl.handle.net/20.500.12380/301973

► Animation of fire and fluids has been around for at least 20 years in the field of computer graphics. These animations have over the years… (more)

Subjects/Keywords: Fire simulation; Fire simulation Android; Fluid dynamics Android; Wavelet Turbulence; Simulation GPU; Fire simulation 3D

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APA (6^th Edition):

SVENSSON, A. (2020). Physically-Based Animation of Fire for Android . (Thesis). Chalmers University of Technology. Retrieved from http://hdl.handle.net/20.500.12380/301973

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):

SVENSSON, AXEL. “Physically-Based Animation of Fire for Android .” 2020. Thesis, Chalmers University of Technology. Accessed March 08, 2021. http://hdl.handle.net/20.500.12380/301973.

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

MLA Handbook (7^th Edition):

SVENSSON, AXEL. “Physically-Based Animation of Fire for Android .” 2020. Web. 08 Mar 2021.

Vancouver:

SVENSSON A. Physically-Based Animation of Fire for Android . [Internet] [Thesis]. Chalmers University of Technology; 2020. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/20.500.12380/301973.

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

Council of Science Editors:

SVENSSON A. Physically-Based Animation of Fire for Android . [Thesis]. Chalmers University of Technology; 2020. Available from: http://hdl.handle.net/20.500.12380/301973

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

Oregon State University

9. Nimmala, Seshu B. An efficient high-performance computing based three-dimensional numerical wave basin model for the design of fluid-structure interaction experiments.

Degree: PhD, Civil Engineering, 2010, Oregon State University

URL: http://hdl.handle.net/1957/18829

► Fluid-structure interaction (FSI) is an interesting and challenging interdisciplinary area comprised of fields such as engineering- fluids/structures/solids, computational science, and mathematics. FSI has several practical… (more)

▼ Fluid-structure interaction (FSI) is an interesting and challenging interdisciplinary area comprised of fields such as engineering- fluids/structures/solids, computational science, and mathematics. FSI has several practical engineering applications such as the design of coastal infrastructure (such as bridges, levees) subjected to harsh environments from natural forces such as tsunamis, storm surges, etc. Development of accurate input conditions to more detailed and complex models involving flexible structures in a fluid domain is an important requirement for the solution of such problems. FSI researchers often employ methods that use results from physical wave basin experiments to assess the wave forces on structures. These experiments, while closer to the physical phenomena, often tend to be time-consuming and expensive. Experiments are also not easily accessible for conducting parametric studies. Alternatively, numerical models when developed with similar capabilities will complement the experiments very well because of the lower costs and the ability to study phenomena that are not feasible in the laboratory. This dissertation is aimed at contributing to the solution of a significant component of the FSI problem with respect to engineering applications, covering accurate input to detailed models and a numerical wave basin to complement large-scale laboratory experiments. To this end, this work contains a description of a three-dimensional numerical wave tank (3D-NWT), its enhancements including the piston wavemaker for generation of waves such as solitary, periodic, and focused waves, and validation using large-scale experiments in the 3D wave basin at Oregon State University. Performing simulations involving fluid dynamics is computational-intensive and the complexity is magnified by the presence of the flexible structure(s) in the fluid domain. The models are also required to take care of large-scale domains such as a wave basin in order to be applicable to practical problems. Therefore, undertaking these efforts requires access to high-performance computing (HPC) platforms and development of parallel codes. With these objectives in mind, parallelization of the 3D-NWT is carried out and discussed in this dissertation. Advisors/Committee Members: Yim, Solomon C. (advisor), Peszynska, Malgorzata (committee member).

Subjects/Keywords: FSI; Fluid-structure interaction – Computer simulation

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APA (6^th Edition):

Nimmala, S. B. (2010). An efficient high-performance computing based three-dimensional numerical wave basin model for the design of fluid-structure interaction experiments. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/18829

Chicago Manual of Style (16^th Edition):

Nimmala, Seshu B. “An efficient high-performance computing based three-dimensional numerical wave basin model for the design of fluid-structure interaction experiments.” 2010. Doctoral Dissertation, Oregon State University. Accessed March 08, 2021. http://hdl.handle.net/1957/18829.

MLA Handbook (7^th Edition):

Nimmala, Seshu B. “An efficient high-performance computing based three-dimensional numerical wave basin model for the design of fluid-structure interaction experiments.” 2010. Web. 08 Mar 2021.

Vancouver:

Nimmala SB. An efficient high-performance computing based three-dimensional numerical wave basin model for the design of fluid-structure interaction experiments. [Internet] [Doctoral dissertation]. Oregon State University; 2010. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/1957/18829.

Council of Science Editors:

Nimmala SB. An efficient high-performance computing based three-dimensional numerical wave basin model for the design of fluid-structure interaction experiments. [Doctoral Dissertation]. Oregon State University; 2010. Available from: http://hdl.handle.net/1957/18829

UCLA

10. Poyart, Eduardo Ribeiro. Parallel, Data-Driven Simulation and Visualization of the Heart.

Degree: Computer Science, 2016, UCLA

URL: http://www.escholarship.org/uc/item/876336jg

► This thesis focuses on the Lagrangian approach to fluid simulation, its parallelization, and its application in the medical imaging and simulation contexts. The fundamentals of… (more)

Subjects/Keywords: Computer science; Fluid; Heart; Parallel; Simulation; SPH

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APA (6^th Edition):

Poyart, E. R. (2016). Parallel, Data-Driven Simulation and Visualization of the Heart. (Thesis). UCLA. Retrieved from http://www.escholarship.org/uc/item/876336jg

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):

Poyart, Eduardo Ribeiro. “Parallel, Data-Driven Simulation and Visualization of the Heart.” 2016. Thesis, UCLA. Accessed March 08, 2021. http://www.escholarship.org/uc/item/876336jg.

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

MLA Handbook (7^th Edition):

Poyart, Eduardo Ribeiro. “Parallel, Data-Driven Simulation and Visualization of the Heart.” 2016. Web. 08 Mar 2021.

Vancouver:

Poyart ER. Parallel, Data-Driven Simulation and Visualization of the Heart. [Internet] [Thesis]. UCLA; 2016. [cited 2021 Mar 08]. Available from: http://www.escholarship.org/uc/item/876336jg.

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

Council of Science Editors:

Poyart ER. Parallel, Data-Driven Simulation and Visualization of the Heart. [Thesis]. UCLA; 2016. Available from: http://www.escholarship.org/uc/item/876336jg

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

University of Saskatchewan

11. Korneeva, Daria Y. Numerical simulation of compressible gas flow coupled to heat conduction in two space dimensions.

Degree: 2011, University of Saskatchewan

URL: http://hdl.handle.net/10388/etd-05312011-143902

► The current thesis studies a model of two dimensional convection of an ideal gas in a rectangular domain having walls of finite thickness. The temperature… (more)

Subjects/Keywords: Navier-Stokes system; numerical simulation; Fluid dynamics

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APA (6^th Edition):

Korneeva, D. Y. (2011). Numerical simulation of compressible gas flow coupled to heat conduction in two space dimensions. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/etd-05312011-143902

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):

Korneeva, Daria Y. “Numerical simulation of compressible gas flow coupled to heat conduction in two space dimensions.” 2011. Thesis, University of Saskatchewan. Accessed March 08, 2021. http://hdl.handle.net/10388/etd-05312011-143902.

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

MLA Handbook (7^th Edition):

Korneeva, Daria Y. “Numerical simulation of compressible gas flow coupled to heat conduction in two space dimensions.” 2011. Web. 08 Mar 2021.

Vancouver:

Korneeva DY. Numerical simulation of compressible gas flow coupled to heat conduction in two space dimensions. [Internet] [Thesis]. University of Saskatchewan; 2011. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/10388/etd-05312011-143902.

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

Council of Science Editors:

Korneeva DY. Numerical simulation of compressible gas flow coupled to heat conduction in two space dimensions. [Thesis]. University of Saskatchewan; 2011. Available from: http://hdl.handle.net/10388/etd-05312011-143902

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

Northeastern University

12. Gao, Fei. Numerical simulation of the droplet-surface impact using interFoam.

Degree: MS, Department of Mechanical and Industrial Engineering, 2016, Northeastern University

URL: http://hdl.handle.net/2047/D20194500

► Droplet dynamics involves multi-scale forces from inertia body force, interior viscous shear stress to surface tension. The main purpose of this thesis is to simulate… (more)

▼ Droplet dynamics involves multi-scale forces from inertia body force, interior viscous shear stress to surface tension. The main purpose of this thesis is to simulate the normal impact of a liquid droplet on a hydrophobic surface by solving for the Navier[nil]Stokes equations. The numerical results obtained is used to evaluate the effects of variable parameters on the droplet deformation evolution. The numerical simulation also works as a complimentary part of the experimental exploration, by the group members in the Droplet-Surface Impact Project in Northeastern University.; The computational tool used is OpenFOAM, an open source CFD software package licensed and distributed by the OpenFOAM Foundation. The specific solver used is interFoam for this two phase problem. Water is modeled as a representative of the Newtonian fluids, while blood is modeled to represent non-Newtonian fluids. Multiple variables of the droplet-surface impact are investigated numerically: initial velocity, droplet diameter, transport properties, all of which contributes to a variation of the Weber number.; The numerical results obtained for water droplets are supported by experimental data and also semi-empirical correlations. The spreading behavior and generation of ripples are in good agreement with that observed in the experimental tests. As the capillary effects become more dominant in the recoiling period, a discrepancy starts to show by a pre-maturely generated secondary droplet in simulation. Possible reasons are speculated for this discrepancy between numerical and experimental results.; In the numerical comparison between water and blood droplets, a resemblance of droplet behavior in the initial spreading process is observed, while the recoiling process shows differences: blood droplets rebound in an "irregular" way compared to water droplets. The difference in deformation behaviors caused by varied transport properties leads to a way of distinguishing liquids by simple droplet-surface impact tests.

Subjects/Keywords: droplet impact; hydrophobic surface; simulation; Drops; Fluid dynamics; Simulation methods; Computational fluid dynamics; Water; Fluid dynamics; Simulation methods; Blood; Fluid dynamics; Simulation methods; Hydrophobic surfaces; Shear (Mechanics)

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APA (6^th Edition):

Gao, F. (2016). Numerical simulation of the droplet-surface impact using interFoam. (Masters Thesis). Northeastern University. Retrieved from http://hdl.handle.net/2047/D20194500

Chicago Manual of Style (16^th Edition):

Gao, Fei. “Numerical simulation of the droplet-surface impact using interFoam.” 2016. Masters Thesis, Northeastern University. Accessed March 08, 2021. http://hdl.handle.net/2047/D20194500.

MLA Handbook (7^th Edition):

Gao, Fei. “Numerical simulation of the droplet-surface impact using interFoam.” 2016. Web. 08 Mar 2021.

Vancouver:

Gao F. Numerical simulation of the droplet-surface impact using interFoam. [Internet] [Masters thesis]. Northeastern University; 2016. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/2047/D20194500.

Council of Science Editors:

Gao F. Numerical simulation of the droplet-surface impact using interFoam. [Masters Thesis]. Northeastern University; 2016. Available from: http://hdl.handle.net/2047/D20194500

Columbia University

13. Da, Fang. Surface-Only Simulation of Fluids.

Degree: 2017, Columbia University

URL: https://doi.org/10.7916/D8X06DCK

► Surface-only simulation methods for fluid dynamics are those that perform computation only on a surface representation, without relying on any volumetric discretization. Such methods have… (more)

Subjects/Keywords: Computer science; Fluid dynamics – Simulation methods

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APA (6^th Edition):

Da, F. (2017). Surface-Only Simulation of Fluids. (Doctoral Dissertation). Columbia University. Retrieved from https://doi.org/10.7916/D8X06DCK

Chicago Manual of Style (16^th Edition):

Da, Fang. “Surface-Only Simulation of Fluids.” 2017. Doctoral Dissertation, Columbia University. Accessed March 08, 2021. https://doi.org/10.7916/D8X06DCK.

MLA Handbook (7^th Edition):

Da, Fang. “Surface-Only Simulation of Fluids.” 2017. Web. 08 Mar 2021.

Vancouver:

Da F. Surface-Only Simulation of Fluids. [Internet] [Doctoral dissertation]. Columbia University; 2017. [cited 2021 Mar 08]. Available from: https://doi.org/10.7916/D8X06DCK.

Council of Science Editors:

Da F. Surface-Only Simulation of Fluids. [Doctoral Dissertation]. Columbia University; 2017. Available from: https://doi.org/10.7916/D8X06DCK

14. Lundell, Christian. Water simulation for cell based sandbox games.

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

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-108828

► This thesis work presents a new algorithm for simulating fluid based on the Navier-Stokes equations. The algorithm is designed for cell based sandbox games… (more)

Subjects/Keywords: Fluid Simulation; Navier-Stokes; Computer Games; GPGPU

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APA (6^th Edition):

Lundell, C. (2014). Water simulation for cell based sandbox games. (Thesis). Linköping UniversityLinköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-108828

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):

Lundell, Christian. “Water simulation for cell based sandbox games.” 2014. Thesis, Linköping UniversityLinköping University. Accessed March 08, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-108828.

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

MLA Handbook (7^th Edition):

Lundell, Christian. “Water simulation for cell based sandbox games.” 2014. Web. 08 Mar 2021.

Vancouver:

Lundell C. Water simulation for cell based sandbox games. [Internet] [Thesis]. Linköping UniversityLinköping University; 2014. [cited 2021 Mar 08]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-108828.

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

Council of Science Editors:

Lundell C. Water simulation for cell based sandbox games. [Thesis]. Linköping UniversityLinköping University; 2014. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-108828

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

Montana State University

15. Krolick, William Christopher. Characterization of the primary instability on atomizing jets using dynamic mode decomposition.

Degree: MS, College of Engineering, 2018, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/14562

► Numerical methods have advanced to the point that many groups can perform detailed numerical simulations of atomizing liquid jets and replicate experimental measurements. However, the… (more)

Subjects/Keywords: Fluid dynamics.; Computer simulation.; Spraying.; Atomization.; Algorithms.

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APA (6^th Edition):

Krolick, W. C. (2018). Characterization of the primary instability on atomizing jets using dynamic mode decomposition. (Masters Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/14562

Chicago Manual of Style (16^th Edition):

Krolick, William Christopher. “Characterization of the primary instability on atomizing jets using dynamic mode decomposition.” 2018. Masters Thesis, Montana State University. Accessed March 08, 2021. https://scholarworks.montana.edu/xmlui/handle/1/14562.

MLA Handbook (7^th Edition):

Krolick, William Christopher. “Characterization of the primary instability on atomizing jets using dynamic mode decomposition.” 2018. Web. 08 Mar 2021.

Vancouver:

Krolick WC. Characterization of the primary instability on atomizing jets using dynamic mode decomposition. [Internet] [Masters thesis]. Montana State University; 2018. [cited 2021 Mar 08]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/14562.

Council of Science Editors:

Krolick WC. Characterization of the primary instability on atomizing jets using dynamic mode decomposition. [Masters Thesis]. Montana State University; 2018. Available from: https://scholarworks.montana.edu/xmlui/handle/1/14562

University of Minnesota

16. Cortes Morales, Angel. Monte Carlo Simulations for Multicomponent Phase Equilibria and Thermophysical Properties of Near-Critical Fluids.

Degree: PhD, Chemistry, 2014, University of Minnesota

URL: http://hdl.handle.net/11299/183387

► Understanding phase equilibria and thermophysical properties of complex fluid mixtures is crucial to the oil and gas industry, particularly for exploration and production process design.… (more)

Subjects/Keywords: Fluid; Hydrocarbon; Molecular; PVT; Simulation; Thermodynamic

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APA (6^th Edition):

Cortes Morales, A. (2014). Monte Carlo Simulations for Multicomponent Phase Equilibria and Thermophysical Properties of Near-Critical Fluids. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/183387

Chicago Manual of Style (16^th Edition):

Cortes Morales, Angel. “Monte Carlo Simulations for Multicomponent Phase Equilibria and Thermophysical Properties of Near-Critical Fluids.” 2014. Doctoral Dissertation, University of Minnesota. Accessed March 08, 2021. http://hdl.handle.net/11299/183387.

MLA Handbook (7^th Edition):

Cortes Morales, Angel. “Monte Carlo Simulations for Multicomponent Phase Equilibria and Thermophysical Properties of Near-Critical Fluids.” 2014. Web. 08 Mar 2021.

Vancouver:

Cortes Morales A. Monte Carlo Simulations for Multicomponent Phase Equilibria and Thermophysical Properties of Near-Critical Fluids. [Internet] [Doctoral dissertation]. University of Minnesota; 2014. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/11299/183387.

Council of Science Editors:

Cortes Morales A. Monte Carlo Simulations for Multicomponent Phase Equilibria and Thermophysical Properties of Near-Critical Fluids. [Doctoral Dissertation]. University of Minnesota; 2014. Available from: http://hdl.handle.net/11299/183387

University of Southern California

17. Cadieux, Francois. Large eddy simulations of laminar separation bubble flows.

Degree: PhD, Aerospace and Mechanical Engineering (Computational Fluid and Solid Mechanics), 2015, University of Southern California

URL: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/553536/rec/3741

► The flow over blades and airfoils at moderate angles of attack and Reynolds numbers ranging from 10⁴ to 10⁵ undergoes separation due to the adverse… (more)

▼ The flow over blades and airfoils at moderate angles of attack and Reynolds numbers ranging from 10⁴ to 10⁵ undergoes separation due to the adverse pressure gradient generated by surface curvature. In many cases, the separated shear layer then transitions to turbulence and reattaches, closing off a recirculation region—the laminar separation bubble. To avoid body‐fitted mesh generation problems and numerical issues, an equivalent problem for flow over a flat plate is formulated by imposing boundary conditions that lead to a pressure distribution and Reynolds number that are similar to those on airfoils. Spalart & Strelets (2000) tested a number of Reynolds‐averaged Navier‐Stokes (RANS) turbulence models for a laminar separation bubble flow over a flat plate. Although results with the Spalart‐Allmaras turbulence model were encouraging, none of the turbulence models tested reliably recovered time‐averaged direct numerical simulation (DNS) results. The purpose of this work is to assess whether large eddy simulation (LES) can more accurately and reliably recover DNS results using drastically reduced resolution—on the order of 1% of DNS resolution which is commonly achievable for LES of turbulent channel flows. LES of a laminar separation bubble flow over a flat plate are performed using a compressible sixth‐order finite‐difference code and two incompressible pseudo‐spectral Navier‐Stokes solvers at resolutions corresponding to approximately 3% and 1% of the chosen DNS benchmark by Spalart & Strelets (2000). The finite‐difference solver is found to be dissipative due to the use of a stability‐enhancing filter. Its numerical dissipation is quantified and found to be comparable to the average eddy viscosity of the dynamic Smagorinsky model, making it difficult to separate the effects of filtering versus those of explicit subgrid‐scale modeling. The negligible numerical dissipation of the pseudo‐spectral solvers allows an unambiguous assessment of the performance of subgrid‐scale models. Three explicit subgrid‐scale models—dynamic Smagorinsky, σ, and truncated Navier‐Stokes (TNS)—are compared to a no‐model simulation (under‐resolved DNS) and evaluated against the benchmark DNS data focusing on two quantities of critical importance to airfoil and blade designers: time‐averaged pressure and skin friction predictions used in lift and drag calculations. Results obtained with these explicit subgrid‐scale models confirm that accurate LES of laminar separation bubble flows are attainable with as low as 1% of DNS resolution, and the poor performance of the no‐model simulation underscores the necessity of subgrid‐scale modelling in coarse LES with low numerical dissipation. Advisors/Committee Members: Domaradzki, Julian A. (Committee Chair), Spedding, Geoffrey R. (Committee Member), Redekopp, Larry G. (Committee Member), Lynett, Patrick J. (Committee Member), Becker, Thorsten W. (Committee Member).

Subjects/Keywords: computational fluid dynamics; fluid mechanics; direct numerical simulation; large eddy simulation; turbomachinery; UAV

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APA (6^th Edition):

Cadieux, F. (2015). Large eddy simulations of laminar separation bubble flows. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/553536/rec/3741

Chicago Manual of Style (16^th Edition):

Cadieux, Francois. “Large eddy simulations of laminar separation bubble flows.” 2015. Doctoral Dissertation, University of Southern California. Accessed March 08, 2021. http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/553536/rec/3741.

MLA Handbook (7^th Edition):

Cadieux, Francois. “Large eddy simulations of laminar separation bubble flows.” 2015. Web. 08 Mar 2021.

Vancouver:

Cadieux F. Large eddy simulations of laminar separation bubble flows. [Internet] [Doctoral dissertation]. University of Southern California; 2015. [cited 2021 Mar 08]. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/553536/rec/3741.

Council of Science Editors:

Cadieux F. Large eddy simulations of laminar separation bubble flows. [Doctoral Dissertation]. University of Southern California; 2015. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/553536/rec/3741

Ryerson University

18. Peri, Ravi Kumar. Experimental studies of vibrations of flexible structures induced by axial pipe flow.

Degree: 2009, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A1234

► This thesis presents experimental studies of vibration of a straight beam and a thin plate in axial pipe flow. Dynamic behaviors of the two structures… (more)

Subjects/Keywords: Fluid-structure interaction; Pipe – Fluid dynamics; Pipelines – Vibration; Vibration – Computer simulation

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APA (6^th Edition):

Peri, R. K. (2009). Experimental studies of vibrations of flexible structures induced by axial pipe flow. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A1234

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):

Peri, Ravi Kumar. “Experimental studies of vibrations of flexible structures induced by axial pipe flow.” 2009. Thesis, Ryerson University. Accessed March 08, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A1234.

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

MLA Handbook (7^th Edition):

Peri, Ravi Kumar. “Experimental studies of vibrations of flexible structures induced by axial pipe flow.” 2009. Web. 08 Mar 2021.

Vancouver:

Peri RK. Experimental studies of vibrations of flexible structures induced by axial pipe flow. [Internet] [Thesis]. Ryerson University; 2009. [cited 2021 Mar 08]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1234.

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

Council of Science Editors:

Peri RK. Experimental studies of vibrations of flexible structures induced by axial pipe flow. [Thesis]. Ryerson University; 2009. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1234

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

University of Newcastle

19. Li, Yuxiu. Instabilities and hydrodynamic origins of a freely moving spherical particle in Newtonian fluid by direct numerical simulation.

Degree: PhD, 2016, University of Newcastle

URL: http://hdl.handle.net/1959.13/1332698

►

Research Doctorate - Doctor of Philosophy (PhD)

Investigations of instabilities of a dynamical system consisting of a single spherical particle freely moving under the action… (more)

▼

Research Doctorate - Doctor of Philosophy (PhD)

Investigations of instabilities of a dynamical system consisting of a single spherical particle freely moving under the action of gravity in a Newtonian quiescent fluid are carried out by a direct numerical simulation method. To do this, the direct numerical simulation code, developed by Diaz-Goano et al. (2003), Veeramani et al. (2007) and Reddy et al. (2010) for Reynolds number (Re) under 210, has been modified to enable simulation Reynolds numbers up to 1800 and solid particle fluid density ratio in the range 0.08-4. Following its successful modification, the code was applied to identify successive transitions in particle trajectory and surrounding fluid vortex pattern. The simulation results were then used to explore the hydrodynamic origin of vortex-induced vibration (VIV) of the particle which were then related to the relevant vortex dynamics theory. With increase of Reynolds number, regimes of particle trajectory are identified as, (I) straight vertical, (II) straight oblique, (III) wavy oblique, (IV) zigzagging, (V) helical, (VI) early stage of chaotic, (VII) chaotic. The corresponding flow features are axisymmetric wake, counter-rotating streamwise vortex pairs in the wake, vortex rings, and eventual breakdown of symmetry (axisymmetric and planar) leading to the chaotic regime. A map of frequency spectrum is developed in terms of Re for both light and heavy particle, which indicates the heavy particle oscillations in a way of two-frequency modes since Re>250 and the light particle since Re>320. The low branch corresponds to the large-scale vortex shedding, and the high branch is associated with the presence of the small-scale vortex structure emanating from the free shear layer. The hydrodynamic origin of the zigzagging motion of the particle is investigated based on insights gained from the numerical simulation. The flow field represented by the pressure distribution, streamline pattern, vorticity distribution and vortical structure are carefully inspected at the Reynolds number of 294 and density ratio of 0.5, where the particle presents a planar zigzagging motion. The vortex system is decomposed into bound vortex and streamwise vortex. The bound vortex leads to a positive transverse force, while the streamwise vortex leads to a reduction of the transverse force. The contributions of the present Ph.D. study can be highlighted by the following points: (1) improvement of the previous DNS in-house code to make it adapted to simulations with high Reynolds number; (2) systematic identification of the scenario of transition to chaos; (3) establishment of the corresponding relationship between the particle oscillating trajection and the vortex pattern; (4) quantitatively discovery of the hydrodynamic origin of the vortex induced vibration (VIV).

Advisors/Committee Members: University of Newcastle. Faculty of Engineering & Built Environment, School of Engineering.

Subjects/Keywords: numerical simulation; Newtonian fluid; spherical particle; Reynolds numbers; fluid flow

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APA (6^th Edition):

Li, Y. (2016). Instabilities and hydrodynamic origins of a freely moving spherical particle in Newtonian fluid by direct numerical simulation. (Doctoral Dissertation). University of Newcastle. Retrieved from http://hdl.handle.net/1959.13/1332698

Chicago Manual of Style (16^th Edition):

Li, Yuxiu. “Instabilities and hydrodynamic origins of a freely moving spherical particle in Newtonian fluid by direct numerical simulation.” 2016. Doctoral Dissertation, University of Newcastle. Accessed March 08, 2021. http://hdl.handle.net/1959.13/1332698.

MLA Handbook (7^th Edition):

Li, Yuxiu. “Instabilities and hydrodynamic origins of a freely moving spherical particle in Newtonian fluid by direct numerical simulation.” 2016. Web. 08 Mar 2021.

Vancouver:

Li Y. Instabilities and hydrodynamic origins of a freely moving spherical particle in Newtonian fluid by direct numerical simulation. [Internet] [Doctoral dissertation]. University of Newcastle; 2016. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/1959.13/1332698.

Council of Science Editors:

Li Y. Instabilities and hydrodynamic origins of a freely moving spherical particle in Newtonian fluid by direct numerical simulation. [Doctoral Dissertation]. University of Newcastle; 2016. Available from: http://hdl.handle.net/1959.13/1332698

University of Manchester

20. Cruz Monterrosas, Juan. AERODYNAMICS AND AEROACOUSTICS SIMULATIONS OF THE AIRBUS A320 FLAP SIDE-EDGE.

Degree: 2019, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:319184

► A computational investigation was carried out to study and determine the aerodynamics and aeroacoustics of an Airbus A320Â´s flap side-edge. A detached eddy simulation was… (more)

Subjects/Keywords: Aeroacoustics; Flap SIde-Edge; Noise Generation; Aerodynamics; CFD; Star-CCM+; Fluid Simulation; Computational Fluid Simulation; detached eddy simulation

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APA (6^th Edition):

Cruz Monterrosas, J. (2019). AERODYNAMICS AND AEROACOUSTICS SIMULATIONS OF THE AIRBUS A320 FLAP SIDE-EDGE. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:319184

Chicago Manual of Style (16^th Edition):

Cruz Monterrosas, Juan. “AERODYNAMICS AND AEROACOUSTICS SIMULATIONS OF THE AIRBUS A320 FLAP SIDE-EDGE.” 2019. Doctoral Dissertation, University of Manchester. Accessed March 08, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:319184.

MLA Handbook (7^th Edition):

Cruz Monterrosas, Juan. “AERODYNAMICS AND AEROACOUSTICS SIMULATIONS OF THE AIRBUS A320 FLAP SIDE-EDGE.” 2019. Web. 08 Mar 2021.

Vancouver:

Cruz Monterrosas J. AERODYNAMICS AND AEROACOUSTICS SIMULATIONS OF THE AIRBUS A320 FLAP SIDE-EDGE. [Internet] [Doctoral dissertation]. University of Manchester; 2019. [cited 2021 Mar 08]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:319184.

Council of Science Editors:

Cruz Monterrosas J. AERODYNAMICS AND AEROACOUSTICS SIMULATIONS OF THE AIRBUS A320 FLAP SIDE-EDGE. [Doctoral Dissertation]. University of Manchester; 2019. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:319184

21. Srinivasan, Raghavan. CFD Heat Transfer Simulation of the Human Upper Respiratory Tract for Oronasal Breathing Condition.

Degree: 2011, North Dakota State University

URL: http://hdl.handle.net/10365/29310

► In this thesis. a three dimensional heat transfer model of heated airflow through the upper human respiratory tract consisting of nasal, oral, trachea, and the… (more)

▼ In this thesis. a three dimensional heat transfer model of heated airflow through the upper human respiratory tract consisting of nasal, oral, trachea, and the first two generations of bronchi is developed using computational fluid dynamics simulation software. Various studies have been carried out in the literature investigating the heat and mass transfer characteristics in the upper human respiratory tract, and the study focuses on assessing the injury taking place in the upper human respiratory tract and identifying acute tissue damage based on level of exposure. The model considered is for the simultaneous oronasal breathing during the inspiration phase with high volumetric flow rate of 90/liters minute and a surrounding air temperature of 100 degrees centigrade. The study of the heat and mass transfer, aerosol deposition and flow characteristics in the upper human respiratory tract using computational fluid mechanics simulation requires access to a two dimensional or three dimensional model for the human respiratory tract. Depicting an exact model is a complex task since it involves the prolonged use of imaging devices on the human body. Hence a three dimensional geometric representation of the human upper respiratory tract is developed consisting of nasal cavity, oral cavity, nasopharynx, pharynx, oropharynx, trachea and first two generations of the bronchi. The respiratory tract is modeled circular in cross-section and varying diameter for various portions as identified in this study. The dimensions are referenced from the literature herein. Based on the dimensions, a simplified model representing the human upper respiratory tract is generated.This model will be useful in studying the flow characteristics and could assist in treatment of injuries to the human respiratory tract as well as help optimize drug delivery mechanism and dosages. Also a methodology is proposed to measure the characteristic dimension of the human nasal and oral cavity at the inlet/outlet points which are classified as internal measurements.

Subjects/Keywords: Respiratory organs – Computer simulation.; Heat – Transmission – Computer simulation.; Mass transfer – Computer simulation.; Computational fluid dynamics.

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APA (6^th Edition):

Srinivasan, R. (2011). CFD Heat Transfer Simulation of the Human Upper Respiratory Tract for Oronasal Breathing Condition. (Thesis). North Dakota State University. Retrieved from http://hdl.handle.net/10365/29310

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):

Srinivasan, Raghavan. “CFD Heat Transfer Simulation of the Human Upper Respiratory Tract for Oronasal Breathing Condition.” 2011. Thesis, North Dakota State University. Accessed March 08, 2021. http://hdl.handle.net/10365/29310.

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

MLA Handbook (7^th Edition):

Srinivasan, Raghavan. “CFD Heat Transfer Simulation of the Human Upper Respiratory Tract for Oronasal Breathing Condition.” 2011. Web. 08 Mar 2021.

Vancouver:

Srinivasan R. CFD Heat Transfer Simulation of the Human Upper Respiratory Tract for Oronasal Breathing Condition. [Internet] [Thesis]. North Dakota State University; 2011. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/10365/29310.

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

Council of Science Editors:

Srinivasan R. CFD Heat Transfer Simulation of the Human Upper Respiratory Tract for Oronasal Breathing Condition. [Thesis]. North Dakota State University; 2011. Available from: http://hdl.handle.net/10365/29310

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

Indian Institute of Science

22. Vijay Kumar, V. Numerical Simulation of Convection Dominated Flows using High Resolution Spectral Method.

Degree: MSc Engg, Faculty of Engineering, 2018, Indian Institute of Science

URL: http://etd.iisc.ac.in/handle/2005/3282

► A high resolution spectrally accurate three-dimensional flow solver is developed in order to simulate convection dominated fluid flows. The governing incompressible Navier Stokes equations along… (more)

Subjects/Keywords: Numerical Simulation; Convection; High Resolution Spectroscopy; Rayleigh Bernard Convection; Fluid Flow - Numerical Simulation; Spatial Discretization; Poisson Solver; Navier Stokes Solver; Fluid Flow Solver; Fluid Dynamics; Taylor Couette Flow; Fluid Mechanics

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

APA (6^th Edition):

Vijay Kumar, V. (2018). Numerical Simulation of Convection Dominated Flows using High Resolution Spectral Method. (Masters Thesis). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/3282

Chicago Manual of Style (16^th Edition):

Vijay Kumar, V. “Numerical Simulation of Convection Dominated Flows using High Resolution Spectral Method.” 2018. Masters Thesis, Indian Institute of Science. Accessed March 08, 2021. http://etd.iisc.ac.in/handle/2005/3282.

MLA Handbook (7^th Edition):

Vijay Kumar, V. “Numerical Simulation of Convection Dominated Flows using High Resolution Spectral Method.” 2018. Web. 08 Mar 2021.

Vancouver:

Vijay Kumar V. Numerical Simulation of Convection Dominated Flows using High Resolution Spectral Method. [Internet] [Masters thesis]. Indian Institute of Science; 2018. [cited 2021 Mar 08]. Available from: http://etd.iisc.ac.in/handle/2005/3282.

Council of Science Editors:

Vijay Kumar V. Numerical Simulation of Convection Dominated Flows using High Resolution Spectral Method. [Masters Thesis]. Indian Institute of Science; 2018. Available from: http://etd.iisc.ac.in/handle/2005/3282

University of Delaware

23. Gangloff, John J., Jr. Modeling and analysis of bubble mobility in fibrous porous media.

Degree: PhD, University of Delaware, Department of Mechanical Engineering, 2014, University of Delaware

URL: http://udspace.udel.edu/handle/19716/16806

► In composites manufacturing, thermoset resin is introduced into a fibrous preform to cover the empty spaces in between fibers. It is important to extract voids… (more)

▼ In composites manufacturing, thermoset resin is introduced into a fibrous preform to cover the empty spaces in between fibers. It is important to extract voids or bubbles, formed due to trapped air or volatiles, before the resin solidifies. Voids in the cured composite reduce the mechanical properties and performance. This dissertation presents modeling and analysis that investigates the flow dynamics of resin and bubbles through fibrous porous media. The aim is to improve the physical understanding of the flow processes for improved process design and part quality. To remove bubbles, one needs unblocked pathways connected to a vacuum. First, a system-level process model is presented that describes the compaction and saturation of composite fibers partially impregnated with resin (i.e. prepregs). The model yields the degree of resin saturation due to the application of an external roller or vacuum pressure. The results estimate the degree of dry fiber region within the system, which correlates to the available unblocked pathways for later bubble removal. Next, a computational model of a prepreg flow channel to describe resin and bubble flow is presented. The channel boundaries consist of rectilinear porous media geometry. A parameter called bubble mobility is defined as the ratio of average bubble velocity to the average resin velocity. The model explores the replacement of porous media domains with slip velocity boundary conditions for computational simplification. The influence of permeability and channel geometry on the two-phase flow via porous wall effects is investigated. Results suggest that parameters can be optimized to increase bubble mobility and ultimately bubble removal. Finally, a model experiment is presented where a flow cell comprised of two transparent parallel plates is injected with a simulated resin and air bubbles. The flow cell is designed to simulate prepreg flow channels. A flow visualization setup records the two-phase flow through the flow cell. A computational model, based on the experimental setup, is formulated to describe the two-phase flow through the flow cell and fibrous porous media. A parametric scaling analysis is conducted to identify and quantify how parameters, such as bubble size and capillary number, can achieve increased bubble mobility. Advisors/Committee Members: Advani, Suresh G..

Subjects/Keywords: Gums and resins – Fluid dynamics – Computer simulation.; Bubbles – Dynamics – Computer simulation.; Porous materials – Computer simulation.; Fibers – Computer simulation.

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APA (6^th Edition):

Gangloff, John J., J. (2014). Modeling and analysis of bubble mobility in fibrous porous media. (Doctoral Dissertation). University of Delaware. Retrieved from http://udspace.udel.edu/handle/19716/16806

Chicago Manual of Style (16^th Edition):

Gangloff, John J., Jr. “Modeling and analysis of bubble mobility in fibrous porous media.” 2014. Doctoral Dissertation, University of Delaware. Accessed March 08, 2021. http://udspace.udel.edu/handle/19716/16806.

MLA Handbook (7^th Edition):

Gangloff, John J., Jr. “Modeling and analysis of bubble mobility in fibrous porous media.” 2014. Web. 08 Mar 2021.

Vancouver:

Gangloff, John J. J. Modeling and analysis of bubble mobility in fibrous porous media. [Internet] [Doctoral dissertation]. University of Delaware; 2014. [cited 2021 Mar 08]. Available from: http://udspace.udel.edu/handle/19716/16806.

Council of Science Editors:

Gangloff, John J. J. Modeling and analysis of bubble mobility in fibrous porous media. [Doctoral Dissertation]. University of Delaware; 2014. Available from: http://udspace.udel.edu/handle/19716/16806

The Ohio State University

24. Chen, Zhili. Towards real-time simulation of interactions among solids andfluids.

Degree: PhD, Computer Science and Engineering, 2015, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1439765582

► The interactions among fluids and solids create many interesting phenomena that are excessively complex for manual creation in animation. It is popular to model these… (more)

▼ The interactions among fluids and solids create many interesting phenomena that are excessively complex for manual creation in animation. It is popular to model these interactions in physically based simulation but it is challenging especially in real-time applications. Collisions handling is a major bottleneck for solid-solid interaction problems because of high computational cost of neighbor searching in space. Solid-fluid interactions are also difficult to simulate mostly because of the difference in representations of fluids and solids. Typically simulation systems use Eulerian methods for fluids and Lagrangian methods for solids. The most adopted coupling strategy uses solid velocity as boundary condition in fluid solver and integrate fluid pressure along solid boundary to apply force on solid. However, the quality of fluid animation is limited by resolution of Eulerian grid thus it cannot handle interaction with thin features on solids.In this dissertation we focus on specific types of interactions among fluids and solids and develop simulation methods with improved quality and performance toward real-time applications. First we address the problem of cloth, air, and deformable body interactions modeling in a layered structure as commonly seen in real world. We develop an accelerated collision detection method taking advantage of the layer structure to improve efficiency and an accurate anisotropic friction model to achieve fine contact details. The interaction of air and other layers is modeled using a fast air mass field model. Next, we turn to fracture simulation in solid-solid interaction, which is known to be computationally expensive in high resolution. We develop a surface refinement approach that adds fine details to existing low-resolution fracture animation with negligible extra computation cost. Finally, we explore coupling of fluid and solid with thin features. We take a stable and fast approach that couples hybrid Eulerian-Lagrangian fluid and position based solids. The approach shows its effectiveness in modeling the paint-brush interactions in a real-time oil-painting simulation system. Advisors/Committee Members: Wang, Huamin (Advisor).

Subjects/Keywords: Computer Science; computer graphics; computer animation; simulation; physics based simulation; fracture simulation; fluid simulation; CUDA; GPU; real-time graphics

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

APA (6^th Edition):

Chen, Z. (2015). Towards real-time simulation of interactions among solids andfluids. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1439765582

Chicago Manual of Style (16^th Edition):

Chen, Zhili. “Towards real-time simulation of interactions among solids andfluids.” 2015. Doctoral Dissertation, The Ohio State University. Accessed March 08, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1439765582.

MLA Handbook (7^th Edition):

Chen, Zhili. “Towards real-time simulation of interactions among solids andfluids.” 2015. Web. 08 Mar 2021.

Vancouver:

Chen Z. Towards real-time simulation of interactions among solids andfluids. [Internet] [Doctoral dissertation]. The Ohio State University; 2015. [cited 2021 Mar 08]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1439765582.

Council of Science Editors:

Chen Z. Towards real-time simulation of interactions among solids andfluids. [Doctoral Dissertation]. The Ohio State University; 2015. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1439765582

NSYSU

25. Huang, Yen-Cheng. Efficient slice-based ocean simulation with fluid-solid coupling mechanics.

Degree: Master, Computer Science and Engineering, 2011, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0905111-182155

► We present a slice-based method that combined with fluid-solid interaction to render the oceans interact with the objects of the simulation. First, according to the… (more)

Subjects/Keywords: Ocean simulation; Navie-Stokes equations; volume of fluid; fluid-solid coupling; slice method

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APA (6^th Edition):

Huang, Y. (2011). Efficient slice-based ocean simulation with fluid-solid coupling mechanics. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0905111-182155

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):

Huang, Yen-Cheng. “Efficient slice-based ocean simulation with fluid-solid coupling mechanics.” 2011. Thesis, NSYSU. Accessed March 08, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0905111-182155.

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

MLA Handbook (7^th Edition):

Huang, Yen-Cheng. “Efficient slice-based ocean simulation with fluid-solid coupling mechanics.” 2011. Web. 08 Mar 2021.

Vancouver:

Huang Y. Efficient slice-based ocean simulation with fluid-solid coupling mechanics. [Internet] [Thesis]. NSYSU; 2011. [cited 2021 Mar 08]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0905111-182155.

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

Council of Science Editors:

Huang Y. Efficient slice-based ocean simulation with fluid-solid coupling mechanics. [Thesis]. NSYSU; 2011. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0905111-182155

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

Ryerson University

26. Hudson, Bryan. Experimental investigations into fluid-structure interactions between a cantilever beam and axially flowing water at different mass flow rates.

Degree: 2015, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A3723

► This thesis presents an experimental investigation into the response of a cantilever beam experiencing axial flow induced vibrations with the free boundary condition at upstream.… (more)

Subjects/Keywords: Fluid-structure interaction – Mathematical models; Pipe – Fluid dynamics; Vibration – Computer simulation; Microelectromechanical systems

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APA (6^th Edition):

Hudson, B. (2015). Experimental investigations into fluid-structure interactions between a cantilever beam and axially flowing water at different mass flow rates. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A3723

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):

Hudson, Bryan. “Experimental investigations into fluid-structure interactions between a cantilever beam and axially flowing water at different mass flow rates.” 2015. Thesis, Ryerson University. Accessed March 08, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A3723.

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

MLA Handbook (7^th Edition):

Hudson, Bryan. “Experimental investigations into fluid-structure interactions between a cantilever beam and axially flowing water at different mass flow rates.” 2015. Web. 08 Mar 2021.

Vancouver:

Hudson B. Experimental investigations into fluid-structure interactions between a cantilever beam and axially flowing water at different mass flow rates. [Internet] [Thesis]. Ryerson University; 2015. [cited 2021 Mar 08]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A3723.

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

Council of Science Editors:

Hudson B. Experimental investigations into fluid-structure interactions between a cantilever beam and axially flowing water at different mass flow rates. [Thesis]. Ryerson University; 2015. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A3723

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

Stellenbosch University

27. Joubert, Eugene Christiaan. Numerical and experimental investigation of one-way fluid structure interaction of a vertical cantilever beam in an air stream.

Degree: PhD, Mechanical and Mechatronic Engineering, 2015, Stellenbosch University

URL: http://hdl.handle.net/10019.1/98039

►

ENGLISH ABSTRACT: This thesis uses open source software for simulating one-way fluid structure interaction (FSI) of a bluff-body geometry and validating the results with wind… (more)

▼

ENGLISH ABSTRACT: This thesis uses open source software for simulating one-way fluid structure interaction (FSI) of a bluff-body geometry and validating the results with wind tunnel measurements. A vertical cantilever beam with a rectangular crosssection is used as main subject as it provides complex flow-induced structural loading conditions, stiffness for ensuring one-way FSI and facilitates the placement of sensors internally during wind tunnel measurements to prevent flow obstruction. The beam is orientated parallel to flow resulting in a streamwise cross-section ratio of L/D = 2:63 and perpendicular to the flow to result in a cross-section ratio of D/L = 0:38 where the cross-section length (long side) is L and the width (short side) is D. Two wind speeds are considered for each orientation causing the Reynolds number to vary between 7.6 ×10[to value of 4] < Re < 4×10[to value of 5]. Laboratory measurements were done to provide boundary conditions, material properties, instrumentation calibration and validation data. Wind tunnel measurements were done for two wind speeds, two beam orientations and at various locations around and on the beam surface. This included velocity field measurements using particle image velocimetry (PIV), pressure, vibration and strain. OpenFOAM is used for the computational fluid dynamics (CFD) work. The CFD simulations can be described as turbulent, incompressible, New-tonian, three-dimensional and unsteady. In the near-wall region Spalding's "all-y+" wall function is used to provide some mesh flexibility and reduce computational requirements without compromising accuracy. The Realizable k-ϵ, k-ω SST, Non-linear k-ϵ Shih and Spalart-Allmaras IDDES turbulence models are compared against measured time-averaged velocity and pressure results. The time-averaged CFD results show that all turbulence models accurately reproduce measured flow fields in the upstream and side-wall regions. In the wake the IDDES turbulence model is the most accurate being able to reproduce a recirculation length of 3D compared to the measured length of 3.2D. The time-dependent results show that all models produce loading frequencies with Strouhal numbers between 0:05 < St < 0:06 which is comparable to literature with St ≈ 0:06 but the amplitudes vary. The IDDES model produces the most accurate results and is also second fastest after the k-ω SST model. A segregated FSI method is employed and coupling is achieved using a combination of newly developed OpenFOAM utilities and Python programs which link the fluid and structural meshes. Code-Aster is used for the finite element methods (FEM) for structural analysis. A shell mesh is used with linear approach and a time-dependent load is applied to the structure as provided by the CFD results. Only the parallel beam at U = 30 m/s shows significant oscillations. The results show that the FSI simulations accurately reproduce the strain of 5.8 µm/m in the beam due to the flow drag loading of 12.9 N.

AFRIKAANSE OPSOMMING: Hierdie tesis…

Advisors/Committee Members: Harms, T. M., Venter, G., Stellenbosch University. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering..

Subjects/Keywords: Fluid structure interaction (FSI); Detached eddy simulation; Computational fluid dynamics (CFD) simulations; Wind tunnel; UCTD

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

APA (6^th Edition):

Joubert, E. C. (2015). Numerical and experimental investigation of one-way fluid structure interaction of a vertical cantilever beam in an air stream. (Doctoral Dissertation). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/98039

Chicago Manual of Style (16^th Edition):

Joubert, Eugene Christiaan. “Numerical and experimental investigation of one-way fluid structure interaction of a vertical cantilever beam in an air stream.” 2015. Doctoral Dissertation, Stellenbosch University. Accessed March 08, 2021. http://hdl.handle.net/10019.1/98039.

MLA Handbook (7^th Edition):

Joubert, Eugene Christiaan. “Numerical and experimental investigation of one-way fluid structure interaction of a vertical cantilever beam in an air stream.” 2015. Web. 08 Mar 2021.

Vancouver:

Joubert EC. Numerical and experimental investigation of one-way fluid structure interaction of a vertical cantilever beam in an air stream. [Internet] [Doctoral dissertation]. Stellenbosch University; 2015. [cited 2021 Mar 08]. Available from: http://hdl.handle.net/10019.1/98039.

Council of Science Editors:

Joubert EC. Numerical and experimental investigation of one-way fluid structure interaction of a vertical cantilever beam in an air stream. [Doctoral Dissertation]. Stellenbosch University; 2015. Available from: http://hdl.handle.net/10019.1/98039

Columbia University

28. Fei, Yun. Multi-Scale Models to Simulate Interactions between Liquid and Thin Structures.

Degree: 2019, Columbia University

URL: https://doi.org/10.7916/d8-gyd1-rf76

► In this dissertation, we introduce a framework for simulating the dynamics between liquid and thin structures, including the effects of buoyancy, drag, capillary cohesion, dripping,… (more)

▼ In this dissertation, we introduce a framework for simulating the dynamics between liquid and thin structures, including the effects of buoyancy, drag, capillary cohesion, dripping, and diffusion. After introducing related works, Part I begins with a discussion on the interactions between Newtonian fluid and fabrics. In this discussion, we treat both the fluid and the fabrics as continuum media; thus, the physical model is built from mixture theory. In Part II, we discuss the interactions between Newtonian fluid and hairs. To have more detailed dynamics, we no longer treat the hairs as continuum media. Instead, we treat them as discrete Kirchhoff rods. To deal with the thin layer of liquid that clings to the hairs, we augment each hair strand with a height field representation, through which we introduce a new reduced-dimensional flow model to solve the motion of liquid along the longitudinal direction of each hair. In addition, we develop a faithful model for the hairs' cohesion induced by surface tension, where a penalty force is applied to simulate the collision and cohesion between hairs. To enable the discrete strands interact with continuum-based, shear-dependent liquid, in Part III, we develop models that account for the volume change of the liquid as it passes through strands and the momentum exchange between the strands and the liquid. Accordingly, we extend the reduced-dimensional flow model to simulate liquid with elastoviscoplastic behavior. Furthermore, we use a constraint-based model to replace the penalty-force model to handle contact, which enables an accurate simulation of the frictional and adhesive effects between wet strands. We also present a principled method to preserve the total momentum of a strand and its surface flow, as well as an analytic plastic flow approach for Herschel-Bulkley fluid that enables stable semi-implicit integration at larger time steps. We demonstrate a wide range of effects, including the challenging animation scenarios involving splashing, wringing, and colliding of wet clothes, as well as flipping of hair, animals shaking, spinning roller brushes from car washes being dunked in water, and intricate hair coalescence effects. For complex liquids, we explore a series of challenging scenarios, including strands interacting with oil paint, mud, cream, melted chocolate, and pasta sauce.

Subjects/Keywords: Computer science; Fluid dynamics – Simulation methods; Hair – Analysis; Moisture in textiles; Fluid dynamics

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APA (6^th Edition):

Fei, Y. (2019). Multi-Scale Models to Simulate Interactions between Liquid and Thin Structures. (Doctoral Dissertation). Columbia University. Retrieved from https://doi.org/10.7916/d8-gyd1-rf76

Chicago Manual of Style (16^th Edition):

Fei, Yun. “Multi-Scale Models to Simulate Interactions between Liquid and Thin Structures.” 2019. Doctoral Dissertation, Columbia University. Accessed March 08, 2021. https://doi.org/10.7916/d8-gyd1-rf76.

MLA Handbook (7^th Edition):

Fei, Yun. “Multi-Scale Models to Simulate Interactions between Liquid and Thin Structures.” 2019. Web. 08 Mar 2021.

Vancouver:

Fei Y. Multi-Scale Models to Simulate Interactions between Liquid and Thin Structures. [Internet] [Doctoral dissertation]. Columbia University; 2019. [cited 2021 Mar 08]. Available from: https://doi.org/10.7916/d8-gyd1-rf76.

Council of Science Editors:

Fei Y. Multi-Scale Models to Simulate Interactions between Liquid and Thin Structures. [Doctoral Dissertation]. Columbia University; 2019. Available from: https://doi.org/10.7916/d8-gyd1-rf76

Hong Kong University of Science and Technology

29. Shan, Tong. Coupled CFD-DEM modeling of fluid-particle interaction in geomechanics.

Degree: 2015, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-74343 ; https://doi.org/10.14711/thesis-b1450650 ; http://repository.ust.hk/ir/bitstream/1783.1-74343/1/th_redirect.html

► The objective of this research is to develop a coupled Computational Fluid Dynamics and Discrete Element Method (CFD-DEM) approach to simulate the behaviour of fluid-particle… (more)

▼ The objective of this research is to develop a coupled Computational Fluid Dynamics and Discrete Element Method (CFD-DEM) approach to simulate the behaviour of fluid-particle interactions in granular media for applications relevant to geotechnical and mining engineering. This research consists of several major components: (1) formulation of the coupling scheme of the CFD and DEM, (2) benchmark of the CFD-DEM scheme, and (3) application of the developed CFD-DEM approach to various problems, including the sandpile formation in water, granular flow impacting on a water reservoir, impacting behaviour of debris flow and particle segregation in particle-fluid flow. To simulate the debris flow, a two-fluid VOF model was developed for the CFD part and then coupled with DEM, to consider the movement of free surface and the interface between two fluids. The extended coupled CFD-DEM tool was first benchmarked by two classic geomechanics problems where analytical solutions are available. It was then employed to investigate the characteristics of sand heap formed in water through hopper flow. It is shown in particular that a sand pile formed in water is more homogeneous in terms of void ratio, contact force and fabric anisotropy. The central pressure dip of vertical stress profile at the base of sandpile is moderately reduced, as compared to the dry case. The CFD-DEM program was further applied to the simulation of impacting behaviour of a granular flow falling from an inclined slope into a water reservoir. The surging wave induced by the impacting granular flow into the reservoir was investigated. The impacting force on the basin dam exerted by the wave and the granular deposit was examined. By investigating the influence of debris falling height and the water level, an optimal water level in the reservoir was recommend which leads to least impacting forces. Two different mechanisms of energy dissipation were found for the dry and the wet cases. In the dry case, the interparticle/particle-wall frictions and collisions are the dominating factors. In the wet case, the granular flow first transfers the majority of its kinetic energy to the water body, which induces surging waves travelling between the check dam and the slope surface for a rather sustained period before it dissipates out all energy and eventually settles down. The Savage number depicts a peak at the transition point and decreases steadily when the flow continues to travel along the reservoir ground. The extended two-fluid CFD-DEM approach has the capability to model the behaviour of debris flow by using the Bingham rheological model. The major parameters that influence the impacting behaviour of dry granular flow are calibrated by the experiment. Two major sets of fluid properties in Bingham fluid model, including the conventional slurry and the thickened slurry, were employed in the coupled simulations and were carefully compared with each other. The evolutions of the impacting forces exerted by the particle phase and the fluid phase were investigated. The velocity…

Subjects/Keywords: Granular flow ; Fluid dynamic measurements ; Computational fluid dynamics ; Discrete element method ; Mechanics, Applied ; Computer simulation

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APA (6^th Edition):

Shan, T. (2015). Coupled CFD-DEM modeling of fluid-particle interaction in geomechanics. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-74343 ; https://doi.org/10.14711/thesis-b1450650 ; http://repository.ust.hk/ir/bitstream/1783.1-74343/1/th_redirect.html

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):

Shan, Tong. “Coupled CFD-DEM modeling of fluid-particle interaction in geomechanics.” 2015. Thesis, Hong Kong University of Science and Technology. Accessed March 08, 2021. http://repository.ust.hk/ir/Record/1783.1-74343 ; https://doi.org/10.14711/thesis-b1450650 ; http://repository.ust.hk/ir/bitstream/1783.1-74343/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Shan, Tong. “Coupled CFD-DEM modeling of fluid-particle interaction in geomechanics.” 2015. Web. 08 Mar 2021.

Vancouver:

Shan T. Coupled CFD-DEM modeling of fluid-particle interaction in geomechanics. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2015. [cited 2021 Mar 08]. Available from: http://repository.ust.hk/ir/Record/1783.1-74343 ; https://doi.org/10.14711/thesis-b1450650 ; http://repository.ust.hk/ir/bitstream/1783.1-74343/1/th_redirect.html.

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

Council of Science Editors:

Shan T. Coupled CFD-DEM modeling of fluid-particle interaction in geomechanics. [Thesis]. Hong Kong University of Science and Technology; 2015. Available from: http://repository.ust.hk/ir/Record/1783.1-74343 ; https://doi.org/10.14711/thesis-b1450650 ; http://repository.ust.hk/ir/bitstream/1783.1-74343/1/th_redirect.html

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

Hong Kong University of Science and Technology

30. Lu, Jielin CIVL. Numerical investigation of unsteady friction modeling in pipe fluid transients : importance and improvement.

Degree: 2014, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-92592 ; https://doi.org/10.14711/thesis-b1302196 ; http://repository.ust.hk/ir/bitstream/1783.1-92592/1/th_redirect.html

► This thesis presents a comprehensive investigation of unsteady friction modeling. The research falls into two areas: assess the necessity of unsteady friction modeling and improve… (more)

▼ This thesis presents a comprehensive investigation of unsteady friction modeling. The research falls into two areas: assess the necessity of unsteady friction modeling and improve on existing models. The importance of unsteady friction in two pipe systems connected in series is determined. A new index (r_e) measuring the importance by considering the energy dissipation rate is proposed and tested. It shows that this index is capable of estimating the importance in a fair manner and can be easily obtained. Numerical experiments of systematically designed transient cases are performed. The energy behaviors show that the importance of unsteady friction for a two pipe system is always larger than that for its corresponding single pipe systems when the diameter difference of the two pipes is relatively small; when the diameter difference is large, the longer pipe in the system governs the importance of unsteady friction. Improvements in “frozen” viscosity assumption of weighting function based model (WFBM) are made. “Frozen” viscosity means that the magnitude and distribution of the turbulent viscosity are fixed to its pre-transient state. The comparison between numerical results and measured pressure head traces from laboratory and field tests show that this assumption is valid during the early stages of the transient but its validity reduces with the duration of the transient. To correct this deficiency, a modification to the WFBM is proposed, in which the effects of time dependency is considered. This modification shows a good match with the analytical and field measured pressure wave amplitude. The adaptability of relaxation time-based model (RTBM) is improved. RTBM is physically based and highly efficient in determining unsteady friction. The major limitation of existing RTBM is the pre-calibration of empirical coefficients before applying to different pipelines. A new RTBM model is proposed with the expressions of the empirical coefficients obtained from curve fitting to numerical results of WFBM. Verification by other numerical models and experimental data shows that the new model performs well in different pipelines without any pre-calibration.

Subjects/Keywords: Pipe ; Fluid dynamics ; Mathematical models ; Unsteady flow (Fluid dynamics) ; Friction ; Simulation methods

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APA (6^th Edition):

Lu, J. C. (2014). Numerical investigation of unsteady friction modeling in pipe fluid transients : importance and improvement. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-92592 ; https://doi.org/10.14711/thesis-b1302196 ; http://repository.ust.hk/ir/bitstream/1783.1-92592/1/th_redirect.html

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):

Lu, Jielin CIVL. “Numerical investigation of unsteady friction modeling in pipe fluid transients : importance and improvement.” 2014. Thesis, Hong Kong University of Science and Technology. Accessed March 08, 2021. http://repository.ust.hk/ir/Record/1783.1-92592 ; https://doi.org/10.14711/thesis-b1302196 ; http://repository.ust.hk/ir/bitstream/1783.1-92592/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Lu, Jielin CIVL. “Numerical investigation of unsteady friction modeling in pipe fluid transients : importance and improvement.” 2014. Web. 08 Mar 2021.

Vancouver:

Lu JC. Numerical investigation of unsteady friction modeling in pipe fluid transients : importance and improvement. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2014. [cited 2021 Mar 08]. Available from: http://repository.ust.hk/ir/Record/1783.1-92592 ; https://doi.org/10.14711/thesis-b1302196 ; http://repository.ust.hk/ir/bitstream/1783.1-92592/1/th_redirect.html.

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

Council of Science Editors:

Lu JC. Numerical investigation of unsteady friction modeling in pipe fluid transients : importance and improvement. [Thesis]. Hong Kong University of Science and Technology; 2014. Available from: http://repository.ust.hk/ir/Record/1783.1-92592 ; https://doi.org/10.14711/thesis-b1302196 ; http://repository.ust.hk/ir/bitstream/1783.1-92592/1/th_redirect.html

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

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