subject:(Computational mechanics)

Rice University

1. Zhang, Yutong. Computational Flow Analysis of a Cyclone Vacuum Cleaner.

Degree: MS, Mechanical Engineering, 2019, Rice University

URL: http://hdl.handle.net/1911/105403

► Computational flow analysis of a cyclone vacuum cleaner can provide valuable fluid mechanics information for efficient design and operation. The vacuum cleaner is made of… (more)

Subjects/Keywords: Fluid Mechanics; Computational Fluid Mechanics

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APA (6^th Edition):

Zhang, Y. (2019). Computational Flow Analysis of a Cyclone Vacuum Cleaner. (Masters Thesis). Rice University. Retrieved from http://hdl.handle.net/1911/105403

Chicago Manual of Style (16^th Edition):

Zhang, Yutong. “Computational Flow Analysis of a Cyclone Vacuum Cleaner.” 2019. Masters Thesis, Rice University. Accessed March 05, 2021. http://hdl.handle.net/1911/105403.

MLA Handbook (7^th Edition):

Zhang, Yutong. “Computational Flow Analysis of a Cyclone Vacuum Cleaner.” 2019. Web. 05 Mar 2021.

Vancouver:

Zhang Y. Computational Flow Analysis of a Cyclone Vacuum Cleaner. [Internet] [Masters thesis]. Rice University; 2019. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1911/105403.

Council of Science Editors:

Zhang Y. Computational Flow Analysis of a Cyclone Vacuum Cleaner. [Masters Thesis]. Rice University; 2019. Available from: http://hdl.handle.net/1911/105403

Cornell University

2. Sabelli, Anthony. Novel Methods For Source Localization And Material Identification.

Degree: PhD, Applied Mathematics, 2013, Cornell University

URL: http://hdl.handle.net/1813/33808

► In this work we present two independent inverse problem methods. In the first chapter we address the problem of source localization. Localizing sources in physical… (more)

▼ In this work we present two independent inverse problem methods. In the first chapter we address the problem of source localization. Localizing sources in physical systems represents a class of inverse problems with broad scientific and engineering applications. This chapter is concerned with the development of a non-iterative source sensitivity approach for the localization of sources in linear systems under steady-state. We show that our proposed approach can be applied to a broad class of physical problems, ranging from source localization in elastodynamics and acoustics to source detection in heat/mass transport problems. The source sensitivity field introduced in this work represents the change of a cost functional caused by the appearance of an infinitesimal source is a given domain (or its boundary). In order to extract macroscopic inferences, we apply a threshold to the source sensitivity field in a way that parallels the application of the topological derivative concept in shape identification. We establish precise formulas for the source sensitivity field using a direct approach and a Lagrangian formulation. We show that computing the source sensitivity field entails just obtaining the solution of a single adjoint problem. Hence, the computational expense of obtaining the source sensitivity is of the same order as that of solving one forward problem. We illustrate the performance of the method through numerical examples drawn from the areas of elastodynamics, acoustics, and heat and mass transport. Our results show that our proposed approach could be used on its own as a source detection tool or to obtain initial guesses for more quantitative iterative gradient-based minimization strategies. In the second chapter we focus on material characterization. Material identification is integral to medical imaging, finite element calibration, non destructive testing, and other engineering applications. We propose an iterative computational framework for nonlinear material identification with transient data. Our method centers on the weak enforcement of the internal force computation, through which we derive a modified internal force equation. We subsequently enforce potentially sparse measurements in a least squares penalty term. The modified internal force equation results in a fully space-time coupled forward and adjoint problem. We consider two steps at each iteration. First the solution to the coupled problem, and second the material parameter update. Our approach generalizes the technique used for linear elastic materials. For our numerical examples, we focus on the Iwan constitutive model, commonly used to model frictional interactions in mechanical joints. We show several numerical examples exploring the accuracy of the coupled problem solution as well as the material reconstruction. We conclude with larger examples requiring distributed computation in order to demonstrate not only the algorithmic properties, but the computational scalability. Advisors/Committee Members: Aquino, Wilkins (chair), Bindel, David S. (committee member), Vladimirsky, Alexander B. (committee member).

Subjects/Keywords: Inverse Problems; Computational Mechanics

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APA (6^th Edition):

Sabelli, A. (2013). Novel Methods For Source Localization And Material Identification. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/33808

Chicago Manual of Style (16^th Edition):

Sabelli, Anthony. “Novel Methods For Source Localization And Material Identification.” 2013. Doctoral Dissertation, Cornell University. Accessed March 05, 2021. http://hdl.handle.net/1813/33808.

MLA Handbook (7^th Edition):

Sabelli, Anthony. “Novel Methods For Source Localization And Material Identification.” 2013. Web. 05 Mar 2021.

Vancouver:

Sabelli A. Novel Methods For Source Localization And Material Identification. [Internet] [Doctoral dissertation]. Cornell University; 2013. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1813/33808.

Council of Science Editors:

Sabelli A. Novel Methods For Source Localization And Material Identification. [Doctoral Dissertation]. Cornell University; 2013. Available from: http://hdl.handle.net/1813/33808

3. Nagai, Toshiki. Space-time Extended Finite Element Method with Applications to Fluid-structure Interaction Problems.

Degree: 2018, University of Colorado at Boulder

URL: http://pqdtopen.proquest.com/#viewpdf?dispub=10844711

► This thesis presents a space-time extended finite element method (space-time XFEM) based on the Heaviside enrichment for transient problems with moving interfaces, and its… (more)

▼ This thesis presents a space-time extended finite element method (space-time XFEM) based on the Heaviside enrichment for transient problems with moving interfaces, and its applications to the fluid-structure interaction (FSI) analysis. The Heaviside-enriched XFEM is a promising method to discretize partial differential equations with discontinuities in space. However, significant approximation errors are introduced by time stepping schemes when the interface geometry changes in time. The proposed space-time XFEM applies the finite element discretization and the Heaviside enrichment in both space and time with elements forming a space-time slab. A simple space-time scheme is introduced to integrate the weak form of the governing equations. This scheme considers spatial intersection configuration at multiple temporal integration points. Standard spatial integration techniques can be applied for each spatial configuration. Nitsche's method and the face-oriented ghost-penalty method are extended to the proposed space-time XFEM formulation. The stability, accuracy and flexibility of the space-time XFEM for various interface conditions including moving interfaces are demonstrated with structural and fluid problems. Moreover, the space-time XFEM enables analyzing complex FSI problems using moving interfaces, such as FSI with contact. Two FSI methods using moving interfaces (full-Eulerian FSI and Lagrangian-immersed FSI) are studied. The Lagrangian-immersed FSI method is a mixed formulation of Lagrangian and Eulerian descriptions. As solid and fluid meshes are independently defined, the FSI is computed between non-matching interfaces based on Nitsche's method and projection techniques adopted from computational contact mechanics. The stabilized Lagrange multiplier method is used for contact. Numerical examples of FSI and FSI-contact problems provide insight into the characteristics of the combination of the space-time XFEM and the Lagrangian-immersed FSI method. The proposed combination is a promising method which has the versatility for various multi-physics simulations and the applicability such as optimization.

Subjects/Keywords: Fluid mechanics; Computational physics

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APA (6^th Edition):

Nagai, T. (2018). Space-time Extended Finite Element Method with Applications to Fluid-structure Interaction Problems. (Thesis). University of Colorado at Boulder. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=10844711

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):

Nagai, Toshiki. “Space-time Extended Finite Element Method with Applications to Fluid-structure Interaction Problems.” 2018. Thesis, University of Colorado at Boulder. Accessed March 05, 2021. http://pqdtopen.proquest.com/#viewpdf?dispub=10844711.

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

MLA Handbook (7^th Edition):

Nagai, Toshiki. “Space-time Extended Finite Element Method with Applications to Fluid-structure Interaction Problems.” 2018. Web. 05 Mar 2021.

Vancouver:

Nagai T. Space-time Extended Finite Element Method with Applications to Fluid-structure Interaction Problems. [Internet] [Thesis]. University of Colorado at Boulder; 2018. [cited 2021 Mar 05]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10844711.

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

Council of Science Editors:

Nagai T. Space-time Extended Finite Element Method with Applications to Fluid-structure Interaction Problems. [Thesis]. University of Colorado at Boulder; 2018. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10844711

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

4. Giffin, Brian Doran. Partitioned Polytopal Finite-Element Methods for Nonlinear Solid Mechanics.

Degree: 2018, University of California, Davis

URL: http://pqdtopen.proquest.com/#viewpdf?dispub=10752138

► This work presents a novel polytopal finite-element framework that addresses the collective issues of discretization sensitivity and mesh generation for computational solid mechanics problems.… (more)

Subjects/Keywords: Computational physics; Mechanics; Applied mathematics

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APA (6^th Edition):

Giffin, B. D. (2018). Partitioned Polytopal Finite-Element Methods for Nonlinear Solid Mechanics. (Thesis). University of California, Davis. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=10752138

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):

Giffin, Brian Doran. “Partitioned Polytopal Finite-Element Methods for Nonlinear Solid Mechanics.” 2018. Thesis, University of California, Davis. Accessed March 05, 2021. http://pqdtopen.proquest.com/#viewpdf?dispub=10752138.

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

MLA Handbook (7^th Edition):

Giffin, Brian Doran. “Partitioned Polytopal Finite-Element Methods for Nonlinear Solid Mechanics.” 2018. Web. 05 Mar 2021.

Vancouver:

Giffin BD. Partitioned Polytopal Finite-Element Methods for Nonlinear Solid Mechanics. [Internet] [Thesis]. University of California, Davis; 2018. [cited 2021 Mar 05]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10752138.

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

Council of Science Editors:

Giffin BD. Partitioned Polytopal Finite-Element Methods for Nonlinear Solid Mechanics. [Thesis]. University of California, Davis; 2018. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10752138

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

University of New South Wales

5. Wang, Junchao. Integrating CAD Geometry and Scaled Boundary Finite Element Analysis.

Degree: Civil & Environmental Engineering, 2018, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/60921 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:54292/SOURCE02?view=true

► The Finite element method (FEM) constitutes a general tool for the numerical solution of partial differential equations in engineering and applied science. Great amount of… (more)

▼ The Finite element method (FEM) constitutes a general tool for the numerical solution of partial differential equations in engineering and applied science. Great amount of research has been conducted on FEM in terms of mathematics and applications, contributing to its dominance over numerical method in solid mechanics and structural analysis. Although it is a principle method for solving complex problems in the engineering field, deficiency in geometric representation has been detected. Besides, it could be expensive in terms of time and human resource to create the mesh required by the FEM.The research towards integrating geometry and analysis has led to the ‘Isogeometric Analysis’ (IGA) (Hughes et al., 2005).However, as the CAD model provides information only of the boundary, a 2D/3D stress analysis is still one major step away.This thesis presents a simple and efficient technique based on the combination of the scales boundary finite element method (SBFEM), automatic mesh generation and adaptive refinement algorithms to reduce the human efforts in the structural analysis. In the SBFEM, only the boundary information is required and hence a seamless integration can be provided with the CAD modelling. The NURBS basis functions are adopted to discretize the unknown fields in the circumferential direction within the proposed framework, whilst analytical solution is sought in the radial direction. This framework will also be further extended to problems with singularities and to dynamic analysis.To mode problems with complex geometries, the problems domains are divided into a mesh of scaled boundary finite elements. A quad-tree based mesh generation algorithm is developed. High quality mesh will be generated with the help of the algorithm and the computational cost will also be improved due to the utilization of the patterns in the quad-tree. Furthermore, no human efforts are required for the pre-processing as the output of the CAD software (i.e. IGES file) will be used to determine the geometric information automatically. Any mismatch between the geometric representation in design and in numerical analysis may be prevented as the design is used directly.To ensure a controllable accuracy and minimal computational cost, an adaptive and robust mesh refinement algorithm is also developed to prevent unnecessary refinement in the region which contributes little to the improvement to the accuracy. The expressions related to the eigenvalues of the SBFEM formulation representing the quantity of the error in the interpolation are adopted as one of the error indicators, together with the area and other geometric properties of the Scaled Boundary Finite Element. A machine learning model using the Multilayer Perceptron (MLP) is trained to determine whether a Scaled Boundary Finite Element needs refinement or not based on all these information.The proposed method is further extended to 3D with an initial mesh generated based on the STL file and octree algorithm. The octree mesh provides a high quality mesh in 3D for SBFEM and the… Advisors/Committee Members: Chongmin, Song, Civil & Environmental Engineering, Faculty of Engineering, UNSW.

Subjects/Keywords: Computational mechanics; Isogeometric analysis

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

APA (6^th Edition):

Wang, J. (2018). Integrating CAD Geometry and Scaled Boundary Finite Element Analysis. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/60921 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:54292/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Wang, Junchao. “Integrating CAD Geometry and Scaled Boundary Finite Element Analysis.” 2018. Doctoral Dissertation, University of New South Wales. Accessed March 05, 2021. http://handle.unsw.edu.au/1959.4/60921 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:54292/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Wang, Junchao. “Integrating CAD Geometry and Scaled Boundary Finite Element Analysis.” 2018. Web. 05 Mar 2021.

Vancouver:

Wang J. Integrating CAD Geometry and Scaled Boundary Finite Element Analysis. [Internet] [Doctoral dissertation]. University of New South Wales; 2018. [cited 2021 Mar 05]. Available from: http://handle.unsw.edu.au/1959.4/60921 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:54292/SOURCE02?view=true.

Council of Science Editors:

Wang J. Integrating CAD Geometry and Scaled Boundary Finite Element Analysis. [Doctoral Dissertation]. University of New South Wales; 2018. Available from: http://handle.unsw.edu.au/1959.4/60921 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:54292/SOURCE02?view=true

University of Oxford

6. Li, Dongli. Computational and experimental study of shock wave interactions with cells.

Degree: PhD, 2016, University of Oxford

URL: https://ora.ox.ac.uk/objects/uuid:38beffe8-06c9-4b49-89f8-f5318c527800 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.729906

► This thesis presents a combined numerical and experimental study on the response of kidney cells to shock waves. The motivation was to develop a mechanistic… (more)

▼ This thesis presents a combined numerical and experimental study on the response of kidney cells to shock waves. The motivation was to develop a mechanistic model of cell deformation in order to improve the clinical use of shock waves, by either enhancing their therapeutic action against target cells or minimising their impact on healthy cells. An ultra-high speed camera was used to visualise individual cells, embedded in tissue-mimicking gel, in order to measure their deformation when subject to a shock wave from a clinical shock wave source. Advanced image processing was employed to extract the contour of the cell from the images. The evolution of the observed cell contour revealed a relatively small deformation during the compressional phase and a much larger deformation during the tensile phases of a shock wave. The experimental observations were captured by a numerical model which describes the volumetric cell response with a bilinear Equation of State and the deviatoric cell response with a viscoelastic framework. Experiments using human kidney cancer cells (CAKI-2) and noncancerous kidney cells (HRE and HK-2) were compared to the model in order to determine their mechanical properties. The differences between cancerous and noncancerous cells were exploited to demonstrate a design process by which shock waves may be able to improve the specificity on targeted cancer cells while having minimal effect on normal cells. The cell response to shock waves was studied in a more biophysically realistic environment to include influence of cell size, shape and orientation, and the presence of neighbouring cells. The most significant difference was predicted when cells were in a cluster in which case the presence of neighbouring cells resulted in a four-fold increase on the von Mises stress and the membrane strain. Finally the numerical model was extended to capture the effect of cell damage using one of two paradigms. In the first paradigm the model captured microdamage during one shock wave but then assumed that the cell recovered by the time the next shock wave arrived. The second model allowed microdamage to accumulate with increasing number of shock waves. These models may be able to explain the strong effect that shock wave loading rate has on tissue damage. In conclusion a validated numerical model has been developed which provides a mechanistic understanding of how cells respond to shock waves. The model has application in suggesting improved strategies for current uses of shock waves, e.g., lithotripsy, as well as opening up new indications such as cancer treatment.

Subjects/Keywords: 610.28; Acoustics; Mechanics – computational mechanics; Cell mechanics; shock waves; high speed imaging; computational mechanics

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APA (6^th Edition):

Li, D. (2016). Computational and experimental study of shock wave interactions with cells. (Doctoral Dissertation). University of Oxford. Retrieved from https://ora.ox.ac.uk/objects/uuid:38beffe8-06c9-4b49-89f8-f5318c527800 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.729906

Chicago Manual of Style (16^th Edition):

Li, Dongli. “Computational and experimental study of shock wave interactions with cells.” 2016. Doctoral Dissertation, University of Oxford. Accessed March 05, 2021. https://ora.ox.ac.uk/objects/uuid:38beffe8-06c9-4b49-89f8-f5318c527800 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.729906.

MLA Handbook (7^th Edition):

Li, Dongli. “Computational and experimental study of shock wave interactions with cells.” 2016. Web. 05 Mar 2021.

Vancouver:

Li D. Computational and experimental study of shock wave interactions with cells. [Internet] [Doctoral dissertation]. University of Oxford; 2016. [cited 2021 Mar 05]. Available from: https://ora.ox.ac.uk/objects/uuid:38beffe8-06c9-4b49-89f8-f5318c527800 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.729906.

Council of Science Editors:

Li D. Computational and experimental study of shock wave interactions with cells. [Doctoral Dissertation]. University of Oxford; 2016. Available from: https://ora.ox.ac.uk/objects/uuid:38beffe8-06c9-4b49-89f8-f5318c527800 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.729906

Penn State University

7. Labarbera, Nicholas Andrew. A Comparison of Modeling Approaches of a High Aspect Cylinder in Axial Flow.

Degree: 2015, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/27459

► Simulating a fully-coupled fluid-structure interaction system from first-principles can be very computationally expensive especially for use in design-level analyses; therefore, it is advantageous to explore… (more)

▼ Simulating a fully-coupled fluid-structure interaction system from first-principles can be very computationally expensive especially for use in design-level analyses; therefore, it is advantageous to explore less computationally expensive methods. By making assumptions about the relevant physics of the problem, simplifications to the governing equations can be applied. These simplifications result in a reduced-order model that can significantly decrease the computational cost; however, the governing equations simplifications result in the reduced-order model neglecting to take into account all the physics of the system. Ideally, the neglected physics would have little to no impact on the dynamics of the system; however, this is not always the case for all input parameters. Therefore, it is important to determine the parameter space for which a reduced order model is valid. In this thesis, numerical simulations of a slender cylinder in axial flow were performed using two different methods. The first is a strongly-coupled fluid-structure interaction simulation based on first-principles. First-principles for this case is solving the incompressible Navier-Stokes equations for the fluid and the full equations of elasticity for the solid domain. The second is a reduced-order model for a cylinder in axial flow that was devised by Paidoussis. It consists of a single linear partial differential equation that requires significantly less computational resources to solve than the non-linear governing equations used in the first-principles model. For certain input parameters, the reduced-order model is capable of predicting stability with comparable accuracy to the first-principles model, but is obtained in a fraction of the time. The goal of this thesis is to investigate the parameter space for which the less computational expensive reduced order model can be utilized and for which the more computationally expensive first-principles solver is required. To accomplish the goal, the two models were compared through the variation of input parameters to determine the parameter ranges corresponding to agreement between models. Results are presented and conclusions discussed. Advisors/Committee Members: Jonathan S Pitt, Thesis Advisor/Co-Advisor.

Subjects/Keywords: fluid-structure; computational mechanics; axial flow

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APA (6^th Edition):

Labarbera, N. A. (2015). A Comparison of Modeling Approaches of a High Aspect Cylinder in Axial Flow. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/27459

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):

Labarbera, Nicholas Andrew. “A Comparison of Modeling Approaches of a High Aspect Cylinder in Axial Flow.” 2015. Thesis, Penn State University. Accessed March 05, 2021. https://submit-etda.libraries.psu.edu/catalog/27459.

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

MLA Handbook (7^th Edition):

Labarbera, Nicholas Andrew. “A Comparison of Modeling Approaches of a High Aspect Cylinder in Axial Flow.” 2015. Web. 05 Mar 2021.

Vancouver:

Labarbera NA. A Comparison of Modeling Approaches of a High Aspect Cylinder in Axial Flow. [Internet] [Thesis]. Penn State University; 2015. [cited 2021 Mar 05]. Available from: https://submit-etda.libraries.psu.edu/catalog/27459.

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

Council of Science Editors:

Labarbera NA. A Comparison of Modeling Approaches of a High Aspect Cylinder in Axial Flow. [Thesis]. Penn State University; 2015. Available from: https://submit-etda.libraries.psu.edu/catalog/27459

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

8. Smith, Katherine Margaret. Effects of Submesoscale Turbulence on Reactive Tracers in the Upper Ocean.

Degree: 2018, University of Colorado at Boulder

URL: http://pqdtopen.proquest.com/#viewpdf?dispub=10623667

► In this dissertation, Large Eddy Simulations (LES) are used to model the coupled turbulence-reactive tracer dynamics within the upper mixed layer of the ocean.… (more)

▼ In this dissertation, Large Eddy Simulations (LES) are used to model the coupled turbulence-reactive tracer dynamics within the upper mixed layer of the ocean. Prior work has shown that LES works well over the spatial and time scales relevant to both turbulence and reactive biogeochemistry. Additionally, the code intended for use is able to carry an arbitrary number of tracer equations, allowing for easy expansion of the species reactions. Research in this dissertation includes a study of 15 idealized non-reactive tracers within an evolving large-scale temperature front in order determine and understand the fundamental dynamics underlying turbulence-tracer interaction in the absence of reactions. The focus of this study, in particular, was on understanding the evolution of biogeochemically-relevant, non-reactive tracers in the presence of both large (~5 km) submesoscale eddies and smallscale (~100 m) wave-driven Langmuir turbulence. The 15 tracers studied have different initial, boundary, and source conditions and significant differences are seen in their distributions depending on these conditions. Differences are also seen between regions where submesoscale eddies and small-scale Langmuir turbulence are both present, and in regions with only Langmuir turbulence. A second study focuses on the examination of Langmuir turbulence effects on upper ocean carbonate chemistry. Langmuir mixing time scales are similar to those of chemical reactions, resulting in potentially strong tracer-flow coupling effects. The strength of the Langmuir turbulence is varied, from no wave-driven turbulence (i.e., only shear-driven turbulence), to Langmuir turbulence that is much stronger than that found in typical upper ocean conditions. Three different carbonate chemistry models are also used in this study: time-dependent chemistry, equilibrium chemistry, and no-chemistry (i.e., non-reactive tracers). The third and final study described in this dissertation details the development of a reduced-order biogeochemical model with 17 state equations that can accurately reproduce the Bermuda Atlantic Time-series Study (BATS) ecosystem behavior, but that can also be integrated within high-resolution LES.

Subjects/Keywords: Fluid mechanics; Computational physics; Physical oceanography

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APA (6^th Edition):

Smith, K. M. (2018). Effects of Submesoscale Turbulence on Reactive Tracers in the Upper Ocean. (Thesis). University of Colorado at Boulder. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=10623667

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):

Smith, Katherine Margaret. “Effects of Submesoscale Turbulence on Reactive Tracers in the Upper Ocean.” 2018. Thesis, University of Colorado at Boulder. Accessed March 05, 2021. http://pqdtopen.proquest.com/#viewpdf?dispub=10623667.

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

MLA Handbook (7^th Edition):

Smith, Katherine Margaret. “Effects of Submesoscale Turbulence on Reactive Tracers in the Upper Ocean.” 2018. Web. 05 Mar 2021.

Vancouver:

Smith KM. Effects of Submesoscale Turbulence on Reactive Tracers in the Upper Ocean. [Internet] [Thesis]. University of Colorado at Boulder; 2018. [cited 2021 Mar 05]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10623667.

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

Council of Science Editors:

Smith KM. Effects of Submesoscale Turbulence on Reactive Tracers in the Upper Ocean. [Thesis]. University of Colorado at Boulder; 2018. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10623667

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

9. Capobianco, Vincent J. Effect of slot height variation on the aerodynamic performance of a circulation control airfoil| A CFD analysis.

Degree: 2017, California State University, Long Beach

URL: http://pqdtopen.proquest.com/#viewpdf?dispub=10639011

► Computational fluid dynamic (CFD) simulations were conducted on a known low aspect ratio wing design as well as four variant designs incorporating Coanda effect… (more)

Subjects/Keywords: Fluid mechanics; Computational physics; Aerospace engineering

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APA (6^th Edition):

Capobianco, V. J. (2017). Effect of slot height variation on the aerodynamic performance of a circulation control airfoil| A CFD analysis. (Thesis). California State University, Long Beach. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=10639011

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):

Capobianco, Vincent J. “Effect of slot height variation on the aerodynamic performance of a circulation control airfoil| A CFD analysis.” 2017. Thesis, California State University, Long Beach. Accessed March 05, 2021. http://pqdtopen.proquest.com/#viewpdf?dispub=10639011.

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

MLA Handbook (7^th Edition):

Capobianco, Vincent J. “Effect of slot height variation on the aerodynamic performance of a circulation control airfoil| A CFD analysis.” 2017. Web. 05 Mar 2021.

Vancouver:

Capobianco VJ. Effect of slot height variation on the aerodynamic performance of a circulation control airfoil| A CFD analysis. [Internet] [Thesis]. California State University, Long Beach; 2017. [cited 2021 Mar 05]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10639011.

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

Council of Science Editors:

Capobianco VJ. Effect of slot height variation on the aerodynamic performance of a circulation control airfoil| A CFD analysis. [Thesis]. California State University, Long Beach; 2017. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10639011

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

Embry-Riddle Aeronautical University

10. Ravulapati, Kartheek. Separation Bubbles and Vortex Formation in Cavity Flows.

Degree: MSin Aerospace Engineering, Graduate Studies, 2014, Embry-Riddle Aeronautical University

URL: https://commons.erau.edu/edt/179

► This research is a computational fluid dynamic study of the formation of vortices and separation bubbles in a square cavity as well as in… (more)

Subjects/Keywords: Aerodynamics and Fluid Mechanics; Computational Engineering

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APA (6^th Edition):

Ravulapati, K. (2014). Separation Bubbles and Vortex Formation in Cavity Flows. (Masters Thesis). Embry-Riddle Aeronautical University. Retrieved from https://commons.erau.edu/edt/179

Chicago Manual of Style (16^th Edition):

Ravulapati, Kartheek. “Separation Bubbles and Vortex Formation in Cavity Flows.” 2014. Masters Thesis, Embry-Riddle Aeronautical University. Accessed March 05, 2021. https://commons.erau.edu/edt/179.

MLA Handbook (7^th Edition):

Ravulapati, Kartheek. “Separation Bubbles and Vortex Formation in Cavity Flows.” 2014. Web. 05 Mar 2021.

Vancouver:

Ravulapati K. Separation Bubbles and Vortex Formation in Cavity Flows. [Internet] [Masters thesis]. Embry-Riddle Aeronautical University; 2014. [cited 2021 Mar 05]. Available from: https://commons.erau.edu/edt/179.

Council of Science Editors:

Ravulapati K. Separation Bubbles and Vortex Formation in Cavity Flows. [Masters Thesis]. Embry-Riddle Aeronautical University; 2014. Available from: https://commons.erau.edu/edt/179

Clemson University

11. Harvey, Tyler George. Computational Approaches to Understanding Structure-Function Relationships at the Intersection of Cellular Organization, Mechanics, and Electrophysiology.

Degree: PhD, Bioengineering, 2018, Clemson University

URL: https://tigerprints.clemson.edu/all_dissertations/2249

► The heart is a complex mechanical and electrical environment and small changes at the cellular and subcellular scale can have profound impacts at the tissue,… (more)

▼ The heart is a complex mechanical and electrical environment and small changes at the cellular and subcellular scale can have profound impacts at the tissue, organ, and organ system levels. The goal of this research is to better understand structure-function relationships at these cellular and subcellular levels of the cardiac environment. This improved understanding may prove increasingly important as medicine begins shifting toward engineered replacement tissues and organs. Specifically, we work towards this goal by presenting a framework to automatically create finite element models of cells based on optical images. This framework can be customized to model the effects of subcellular structure and organization on mechanical and electrophysiological properties at the cellular level and has the potential for extension to the tissue level and beyond. In part one of this work, we present a novel algorithm is presented that can generate physiologically relevant distributions of myofibrils within adult cardiomyocytes from confocal microscopy images. This is achieved by modelling these distributions as directed acyclic graphs, assigning a cost to each node based on observations of cardiac structure and function, and determining to minimum-cost flow through the network. This resulting flow represents the optimal distribution of myofibrils within the cell. In part two, these generated geometries are used as inputs to a finite element model (FEM) to determine the role the myofibrillar organization plays in the axal and transverse mechanics of the whole cell. The cardiomyocytes are modeled as a composite of fiber trusses within an elastic solid matrix. The behavior of the model is validated by comparison to data from combined Atomic Force Microscopy (AFM) and Carbon Fiber manipulation. Recommendations for extending the FEM framework are also explored. A secondary goal, discussed in part three of this work, is to make computational models and simulation tools more accessible to novice learners. Doing so allows active learning of complicated course materials to take place. Working towards this goal, we present CellSpark: a simulation tool developed for teaching cellular electrophysiology and modelling to undergraduate bioengineering students. We discuss the details of its implementation and implications for improved student learning outcomes when used as part of a discovery learning assignment. Advisors/Committee Members: Delphine Dean, Committee Chair, Bruce Z. Gao, Jiro Nagatomi, William Richardson.

Subjects/Keywords: Cardiac mechanics; Computational modeling; Engineering education

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APA (6^th Edition):

Harvey, T. G. (2018). Computational Approaches to Understanding Structure-Function Relationships at the Intersection of Cellular Organization, Mechanics, and Electrophysiology. (Doctoral Dissertation). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_dissertations/2249

Chicago Manual of Style (16^th Edition):

Harvey, Tyler George. “Computational Approaches to Understanding Structure-Function Relationships at the Intersection of Cellular Organization, Mechanics, and Electrophysiology.” 2018. Doctoral Dissertation, Clemson University. Accessed March 05, 2021. https://tigerprints.clemson.edu/all_dissertations/2249.

MLA Handbook (7^th Edition):

Harvey, Tyler George. “Computational Approaches to Understanding Structure-Function Relationships at the Intersection of Cellular Organization, Mechanics, and Electrophysiology.” 2018. Web. 05 Mar 2021.

Vancouver:

Harvey TG. Computational Approaches to Understanding Structure-Function Relationships at the Intersection of Cellular Organization, Mechanics, and Electrophysiology. [Internet] [Doctoral dissertation]. Clemson University; 2018. [cited 2021 Mar 05]. Available from: https://tigerprints.clemson.edu/all_dissertations/2249.

Council of Science Editors:

Harvey TG. Computational Approaches to Understanding Structure-Function Relationships at the Intersection of Cellular Organization, Mechanics, and Electrophysiology. [Doctoral Dissertation]. Clemson University; 2018. Available from: https://tigerprints.clemson.edu/all_dissertations/2249

University of Pennsylvania

12. Cao, Xuan. Continuum Modeling Of Cell-Extracellular Environment Interaction.

Degree: 2019, University of Pennsylvania

URL: https://repository.upenn.edu/edissertations/3477

► To perform functions such as proliferation, differentiation, and locomotion, living cells establish stable attachments to the extracellular matrix (ECM) via the formation of specialized receptor… (more)

Subjects/Keywords: Computational Biomechanics; Mechanobiology; Biophysics; Mechanics of Materials

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APA (6^th Edition):

Cao, X. (2019). Continuum Modeling Of Cell-Extracellular Environment Interaction. (Thesis). University of Pennsylvania. Retrieved from https://repository.upenn.edu/edissertations/3477

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):

Cao, Xuan. “Continuum Modeling Of Cell-Extracellular Environment Interaction.” 2019. Thesis, University of Pennsylvania. Accessed March 05, 2021. https://repository.upenn.edu/edissertations/3477.

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

MLA Handbook (7^th Edition):

Cao, Xuan. “Continuum Modeling Of Cell-Extracellular Environment Interaction.” 2019. Web. 05 Mar 2021.

Vancouver:

Cao X. Continuum Modeling Of Cell-Extracellular Environment Interaction. [Internet] [Thesis]. University of Pennsylvania; 2019. [cited 2021 Mar 05]. Available from: https://repository.upenn.edu/edissertations/3477.

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

Council of Science Editors:

Cao X. Continuum Modeling Of Cell-Extracellular Environment Interaction. [Thesis]. University of Pennsylvania; 2019. Available from: https://repository.upenn.edu/edissertations/3477

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

The George Washington University

13. Dhruv, Akash. A Multiphase Solver for High-Fidelity Phase-Change Simulations over Complex Geometries.

Degree: 2021, The George Washington University

URL: http://pqdtopen.proquest.com/#viewpdf?dispub=28256871

► Complex interactions between solid, liquid and gas occur in many practical engineering applications, and are often difficult to quantify experimentally. A few examples include boiling… (more)

Subjects/Keywords: Fluid mechanics; Computational physics; Mechanical engineering

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APA (6^th Edition):

Dhruv, A. (2021). A Multiphase Solver for High-Fidelity Phase-Change Simulations over Complex Geometries. (Thesis). The George Washington University. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=28256871

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):

Dhruv, Akash. “A Multiphase Solver for High-Fidelity Phase-Change Simulations over Complex Geometries.” 2021. Thesis, The George Washington University. Accessed March 05, 2021. http://pqdtopen.proquest.com/#viewpdf?dispub=28256871.

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

MLA Handbook (7^th Edition):

Dhruv, Akash. “A Multiphase Solver for High-Fidelity Phase-Change Simulations over Complex Geometries.” 2021. Web. 05 Mar 2021.

Vancouver:

Dhruv A. A Multiphase Solver for High-Fidelity Phase-Change Simulations over Complex Geometries. [Internet] [Thesis]. The George Washington University; 2021. [cited 2021 Mar 05]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=28256871.

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

Council of Science Editors:

Dhruv A. A Multiphase Solver for High-Fidelity Phase-Change Simulations over Complex Geometries. [Thesis]. The George Washington University; 2021. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=28256871

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

Washington State University

14. [No author]. Modeling and Simulation of Microstructure Evolution and Deformation in an Irradiated Environment .

Degree: 2019, Washington State University

URL: http://hdl.handle.net/2376/16736

► The ability to predict the behavior of structural components in a nuclear power plant is critical to the nuclear industry. Structural metals in the primary… (more)

▼ The ability to predict the behavior of structural components in a nuclear power plant is critical to the nuclear industry. Structural metals in the primary loop of nuclear power plants must endure challenges such as irradiation and mechanical and thermal loading, and these structural metal components must continue to function in potential transient and accident conditions throughout the operational lifetime of the power plant. This extreme operational environment changes the metal microstructure by creating additional defects. The physical interactions of dislocations with these defects govern how the metal will respond to future conditions. Therefore predicting the mechanical response of these metals requires a set of physically based and reliable models of dislocation and defect interactions. These microstructure elements include glide mobile and immobile dislocations, geometrically necessary dislocations, twinning dislocations, irradiation defects, and thermal aging defects. We present here a continuum dislocation dynamics crystal plasticity framework to capture the interaction mechanisms of these dislocations and defects, verified with a combination of benchmark problems and comparisons with experimental data for two different types of structural metals: alpha iron and nickel-based alloys. In our simulations of alpha iron we highlight the advantages of applying a Monte Carlo stochastic model of cross slip dislocation motion and show the importance of capturing the 3D nature of glide dislocation and self-interstitial atom loop radiation defect interactions. We demonstrate coupling of glide dislocations with geometrically necessary dislocations to capture the influence of lattice bending, including the sensitivity of the geometrically necessary dislocations to changes in the grain boundary angle. We further examine the interaction of glide dislocations with the twin dislocations and thermally aged defects which have been observed in a nickel-based alloy with additional models. Finally we assess the reliability of this crystal plasticity framework by comparing two dislocation glide velocity models across the range of normal operation temperatures. In successfully applying our crystal plasticity framework to multiple metals, we provide further evidence of the reliability of our approach. The results of this mechanism-based continuum dislocation dynamics crystal plasticity framework can be used to inform engineering scale models throughout the nuclear industry. Advisors/Committee Members: Zbib, Hussein M (advisor).

Subjects/Keywords: Mechanics; Materials Science; Mechanical engineering; Computational Mechanics; Crystal plasticity; Irradiation

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

APA (6^th Edition):

author], [. (2019). Modeling and Simulation of Microstructure Evolution and Deformation in an Irradiated Environment . (Thesis). Washington State University. Retrieved from http://hdl.handle.net/2376/16736

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):

author], [No. “Modeling and Simulation of Microstructure Evolution and Deformation in an Irradiated Environment .” 2019. Thesis, Washington State University. Accessed March 05, 2021. http://hdl.handle.net/2376/16736.

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

MLA Handbook (7^th Edition):

author], [No. “Modeling and Simulation of Microstructure Evolution and Deformation in an Irradiated Environment .” 2019. Web. 05 Mar 2021.

Vancouver:

author] [. Modeling and Simulation of Microstructure Evolution and Deformation in an Irradiated Environment . [Internet] [Thesis]. Washington State University; 2019. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/2376/16736.

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

Council of Science Editors:

author] [. Modeling and Simulation of Microstructure Evolution and Deformation in an Irradiated Environment . [Thesis]. Washington State University; 2019. Available from: http://hdl.handle.net/2376/16736

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

Washington State University

15. [No author]. A DISLOCATION-BASED MULTISCALE MODELING OF PLASTICITY AND CONTROLLING MECHANISMS .

Degree: 2016, Washington State University

URL: http://hdl.handle.net/2376/12108

► The objective of this research is to investigate the plastic deformation and its controlling mechanisms in order to model and predict the material microstructure either… (more)

▼ The objective of this research is to investigate the plastic deformation and its controlling mechanisms in order to model and predict the material microstructure either dislocation pileups as a feature of plasticity or spatio-temporal dislocations pattern as another feature of plastic deformation using a hierarchical multiscale modeling approach from discrete dislocation dynamic to continuum dislocation dynamics and continuum mechanics. Investigation of size-dependent phenomenon in single crystals as well as polycrystals is the other objective of this research. We studied this size effect at small scales using the dislocation pileups within a stress-gradient plasticity theory and also using a continuum dislocation dynamic model coupled with a viscoplastic self-consistent (VPSC) model by introducing strain-gradient plasticity and stress-gradient plasticity models, also a combined model into viscoplasticity theory. In strain-gradient plasticity, the length scale controlling size effect has been attributed to so-called geometrically necessary dislocations. This size dependency in plasticity can also be attributed to dislocation pileups in source-obstacle configurations. This has led to the development of stress-gradient plasticity models in the presence of stress gradients. In this work, we re-examine this pileup problem by investigating the double pileup of dislocations emitted from two sources in an inhomogeneous state of stress using both discrete dislocation dynamics and a continuum method which resulted in a dislocation-based stress-gradient plasticity model, leading to an explicit expression for flow stress. Our findings show that this expression depends on obstacle spacing, as in the Hall–Petch effect, as well as higher-order stress gradients. In addition, we developed a physically-based mesoscale model for dislocation dynamics systems to predict the deformation and spontaneous formation of spatio-temporal dislocation patterns over microscopic space and time. This mesoscale model includes a set of nonlinear partial differential equations of reaction-diffusion type. Here we consider the equations within a one-dimensional framework and analyze the stability of steady-state solutions for these equations to elucidate the associated patterns with their intrinsic length scale. The numerical solution to the model in one-dimension as well as two-dimension yields the spatial distribution of dislocation patterns over time. Advisors/Committee Members: Zbib, Hussein M (advisor).

Subjects/Keywords: Mechanical engineering; Mechanics; Computational Mechanics; Dislocation Mechanics; Multiscale Modeling of Materials; Plasticity

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

APA (6^th Edition):

author], [. (2016). A DISLOCATION-BASED MULTISCALE MODELING OF PLASTICITY AND CONTROLLING MECHANISMS . (Thesis). Washington State University. Retrieved from http://hdl.handle.net/2376/12108

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):

author], [No. “A DISLOCATION-BASED MULTISCALE MODELING OF PLASTICITY AND CONTROLLING MECHANISMS .” 2016. Thesis, Washington State University. Accessed March 05, 2021. http://hdl.handle.net/2376/12108.

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

MLA Handbook (7^th Edition):

author], [No. “A DISLOCATION-BASED MULTISCALE MODELING OF PLASTICITY AND CONTROLLING MECHANISMS .” 2016. Web. 05 Mar 2021.

Vancouver:

author] [. A DISLOCATION-BASED MULTISCALE MODELING OF PLASTICITY AND CONTROLLING MECHANISMS . [Internet] [Thesis]. Washington State University; 2016. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/2376/12108.

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

Council of Science Editors:

author] [. A DISLOCATION-BASED MULTISCALE MODELING OF PLASTICITY AND CONTROLLING MECHANISMS . [Thesis]. Washington State University; 2016. Available from: http://hdl.handle.net/2376/12108

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

16. Berthelsen, Rolf. Computational homogenisation of thermomechanical problems.

Degree: 2019, Technische Universität Dortmund

URL: http://dx.doi.org/10.17877/DE290R-21028

► The thesis at hand deals with the modelling of heat input and mass deposition during thermal spraying and especially with the capturing of the effective… (more)

Subjects/Keywords: Thermo-mechanics; Homogenisation; Finite element method; Computational mechanics; 620; 670; Thermomechanik; Homogenisierungsmethode; Finite-Elemente-Methode; Computational mechanics

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APA (6^th Edition):

Berthelsen, R. (2019). Computational homogenisation of thermomechanical problems. (Doctoral Dissertation). Technische Universität Dortmund. Retrieved from http://dx.doi.org/10.17877/DE290R-21028

Chicago Manual of Style (16^th Edition):

Berthelsen, Rolf. “Computational homogenisation of thermomechanical problems.” 2019. Doctoral Dissertation, Technische Universität Dortmund. Accessed March 05, 2021. http://dx.doi.org/10.17877/DE290R-21028.

MLA Handbook (7^th Edition):

Berthelsen, Rolf. “Computational homogenisation of thermomechanical problems.” 2019. Web. 05 Mar 2021.

Vancouver:

Berthelsen R. Computational homogenisation of thermomechanical problems. [Internet] [Doctoral dissertation]. Technische Universität Dortmund; 2019. [cited 2021 Mar 05]. Available from: http://dx.doi.org/10.17877/DE290R-21028.

Council of Science Editors:

Berthelsen R. Computational homogenisation of thermomechanical problems. [Doctoral Dissertation]. Technische Universität Dortmund; 2019. Available from: http://dx.doi.org/10.17877/DE290R-21028

17. Gniewek, Pawel. Mechanics of Confined Microbial Populations.

Degree: Biophysics, 2018, University of California – Berkeley

URL: http://www.escholarship.org/uc/item/48f65099

► Living systems offer a richness of behaviors that are of broad interest to many fields of science. For instance, cells that are dwelling in their… (more)

▼ Living systems offer a richness of behaviors that are of broad interest to many fields of science. For instance, cells that are dwelling in their natural environment are mostly subject not only to the scarcity of energy resources, but also the space in which they can grow and live. This space limitation eventually leads to the emergence of contact forces (mechanical stress) between neighboring cells or the cells and their confining environment. These emergent forces may further have a crucial impact on the cells' biology, the dynamics of the whole population, or even the integrity of confinement (resulting in the remodeling of the environment). Even though the general importance of these forces has been widely recognized, technical difficulties and the complexity of the emergent phenomena prevented much progress in this direction. In this thesis, using mostly computer simulations, I make steps towards overcoming these barriers. In the first part of this thesis, I describe, on the coarse level, how the geometric properties of micro-confinement entails clogging of the microbial populations of Saccharomyces cerevisiae. These clogged populations are found to be quite disordered, with intermittent growth dynamics and heterogeneous mechanical stresses - properties much more like those of granular materials than a continuum. Thus, granular materials are an appealing framework to describe dense microbial populations. However, using a simple 2D model, I numerically show that the coupling between cellular growth rate and mechanical stress gives rise to deviation from the expected behavior of inanimate granular materials, and it increases the complexity of the emergent phenomena. The simple and coarse model used in the first part of the thesis is sufficient for relatively low density systems, but it is not adequate for strongly compacted systems. Thus, in the second part of this thesis, I employ the Finite Element Method to study in detail the structure and mechanics of the disordered packings of elastic shells - our proxy model for dense cellular packings. Therein, I discuss how deformations resulting from large compressive forces couple the structural and mechanical properties of the compact packings. Finally, using Lattice-Boltzmann simulations, I investigate the fluid transport in such compacted packings of deformable shells. I show that a relatively simple model proposed by Kozeny & Carman, combined with a percolation theory, can capture the fluid transport in porous materials. This result is of interest not only in dense biological systems, but also in a broader class of granular porous materials.

Subjects/Keywords: Biophysics; Computational physics; Mechanics; Continuum mechanics; Fluid mechanics; Granular materials; Jamming transition; Percolation theory; Statistical Mechanics

10 more images…

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APA (6^th Edition):

Gniewek, P. (2018). Mechanics of Confined Microbial Populations. (Thesis). University of California – Berkeley. Retrieved from http://www.escholarship.org/uc/item/48f65099

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):

Gniewek, Pawel. “Mechanics of Confined Microbial Populations.” 2018. Thesis, University of California – Berkeley. Accessed March 05, 2021. http://www.escholarship.org/uc/item/48f65099.

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

MLA Handbook (7^th Edition):

Gniewek, Pawel. “Mechanics of Confined Microbial Populations.” 2018. Web. 05 Mar 2021.

Vancouver:

Gniewek P. Mechanics of Confined Microbial Populations. [Internet] [Thesis]. University of California – Berkeley; 2018. [cited 2021 Mar 05]. Available from: http://www.escholarship.org/uc/item/48f65099.

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

Council of Science Editors:

Gniewek P. Mechanics of Confined Microbial Populations. [Thesis]. University of California – Berkeley; 2018. Available from: http://www.escholarship.org/uc/item/48f65099

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

Michigan State University

18. Zhou, Wu (Scientist). Peridynamic modeling and impact testing of dynamic damage, fracture, and failure process in fiber-reinforced composite materials.

Degree: 2018, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:19407

►

Thesis Ph. D. Michigan State University. Mechanical Engineering 2018

"This study focuses on developing a peridynamics (PD) theory based model for the prediction of impact-induced… (more)

Subjects/Keywords: Mechanics, Applied; Continuum damage mechanics; Fracture mechanics – Mathematical models; Fibrous composites – Fracture – Analysis; Mechanics; Computational physics; Mechanical engineering

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APA (6^th Edition):

Zhou, W. (. (2018). Peridynamic modeling and impact testing of dynamic damage, fracture, and failure process in fiber-reinforced composite materials. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:19407

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):

Zhou, Wu (Scientist). “Peridynamic modeling and impact testing of dynamic damage, fracture, and failure process in fiber-reinforced composite materials.” 2018. Thesis, Michigan State University. Accessed March 05, 2021. http://etd.lib.msu.edu/islandora/object/etd:19407.

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

MLA Handbook (7^th Edition):

Zhou, Wu (Scientist). “Peridynamic modeling and impact testing of dynamic damage, fracture, and failure process in fiber-reinforced composite materials.” 2018. Web. 05 Mar 2021.

Vancouver:

Zhou W(. Peridynamic modeling and impact testing of dynamic damage, fracture, and failure process in fiber-reinforced composite materials. [Internet] [Thesis]. Michigan State University; 2018. [cited 2021 Mar 05]. Available from: http://etd.lib.msu.edu/islandora/object/etd:19407.

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

Council of Science Editors:

Zhou W(. Peridynamic modeling and impact testing of dynamic damage, fracture, and failure process in fiber-reinforced composite materials. [Thesis]. Michigan State University; 2018. Available from: http://etd.lib.msu.edu/islandora/object/etd:19407

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

University of Notre Dame

19. Edwin Mathews. Numerical and Theoretical Analysis of Aero-Optics with Application to an Optical Turret</h1>.

Degree: Aerospace and Mechanical Engineering, 2017, University of Notre Dame

URL: https://curate.nd.edu/show/3197xk83k9c

► When an optical beam is transmitted through a compressible turbulent flow, it is distorted due to the non-uniform speed of light resulting from density… (more)

▼ When an optical beam is transmitted through a compressible turbulent flow, it is distorted due to the non-uniform speed of light resulting from density fluctuations. The distortions caused by turbulent airflow surrounding the exit pupil of a beam director, known as aero-optical phenomena, are a major impediment to applications of airborne laser systems. The objectives of this research are to gain a deep understanding of the fluid dynamical causes of aero-optical phenomena and to improve the ability to predict them in practically important flow configurations. <span></span>To better understand the spectral properties of aero-optical distortions, a general expression for the phase-distortion spectrum is derived from the ideal-gas law and Gladstone-Dale relation. Using this expression, the relationship among the optical distortion magnitude, turbulence length scales, and aperture size is examined, and resolution requirements for wavefront sensor measurements and numerical simulations are analyzed. Large-eddy simulations (LES) of weakly compressible, temporally evolving shear layers are used to verify theoretical results and to investigate turbulent density fluctuations in relation to pressure and temperature fluctuations. Computational results support theoretical findings and confirm that if the log slope of the one-dimensional density spectrum in the inertial range is -m_rho, the optical phase distortion spectral slope is given by -m_rho + 1. The value of m_rho is shown to be dependent on the ratio of shear-layer free-stream densities and bounded by the spectral slopes of temperature and pressure fluctuations. One of the most widely used optical transmission platforms is the hemisphere-on-cylinder turret. When employed on an aircraft, the bluff-body shape of the turret creates a complex turbulent flow that can cause severe optical aberrations at even low subsonic Mach numbers. To investigate the turret aero-optics, wall-modeled LES is used to simulate flow over a turret at Mach 0.4 and Reynolds number of 2.3 x 10⁶, and the optical distortions are computed using ray tracing. Basic flow and optical statistics show agreement with available experimental data. It is found that the optical distortion over a majority of the turret field-of-regard is solely dependent on the lookback angle. Regions of the field-of-regard where the lookback angle alone is not sufficient to relate viewing angle to optical distortion are those strongly affected by the horn vortices in the turret wake. Wavefront statistics as functions of viewing angle are presented along with the effects of pressure and temperature fluctuations on optical distortions. Topics important to the design of aero-optical mitigation strategies, such as steady lensing, beam jitter and the connection between optical distortions and turret pressure fluctuations, are discussed and quantified. Advisors/Committee Members: Stanislav Gordeyev, Committee Member, Meng Wang, Research Director, Gretar Tryggvason , Committee Member, Eric Jumper, Research Director, Kenneth Christensen, Committee Member.

Subjects/Keywords: Electromagnetic Wave Propagation; Turbulence; Adaptive Optics; Computational Fluid Mechanics; Computational Aero-Optics; Aero-Optics

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APA (6^th Edition):

Mathews, E. (2017). Numerical and Theoretical Analysis of Aero-Optics with Application to an Optical Turret</h1>. (Thesis). University of Notre Dame. Retrieved from https://curate.nd.edu/show/3197xk83k9c

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):

Mathews, Edwin. “Numerical and Theoretical Analysis of Aero-Optics with Application to an Optical Turret</h1>.” 2017. Thesis, University of Notre Dame. Accessed March 05, 2021. https://curate.nd.edu/show/3197xk83k9c.

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

MLA Handbook (7^th Edition):

Mathews, Edwin. “Numerical and Theoretical Analysis of Aero-Optics with Application to an Optical Turret</h1>.” 2017. Web. 05 Mar 2021.

Vancouver:

Mathews E. Numerical and Theoretical Analysis of Aero-Optics with Application to an Optical Turret</h1>. [Internet] [Thesis]. University of Notre Dame; 2017. [cited 2021 Mar 05]. Available from: https://curate.nd.edu/show/3197xk83k9c.

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

Council of Science Editors:

Mathews E. Numerical and Theoretical Analysis of Aero-Optics with Application to an Optical Turret</h1>. [Thesis]. University of Notre Dame; 2017. Available from: https://curate.nd.edu/show/3197xk83k9c

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

University of California – San Diego

20. Hsu, Ming-Chen. Fluid-Structure Interaction Analysis of Wind Turbines.

Degree: Structural Engineering, 2012, University of California – San Diego

URL: http://www.escholarship.org/uc/item/6rn568h0

► Countries around the world are putting substantial effort into the development of wind energy technologies. The urgent need of renewable energy puts pressure on the… (more)

Subjects/Keywords: Engineering; Mechanics; Energy; Computational Fluid Dynamics; Computational Mechanics; Finite Element Method; Fluid-Structure Interaction; Isogeometric Analysis; Wind Energy

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APA (6^th Edition):

Hsu, M. (2012). Fluid-Structure Interaction Analysis of Wind Turbines. (Thesis). University of California – San Diego. Retrieved from http://www.escholarship.org/uc/item/6rn568h0

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):

Hsu, Ming-Chen. “Fluid-Structure Interaction Analysis of Wind Turbines.” 2012. Thesis, University of California – San Diego. Accessed March 05, 2021. http://www.escholarship.org/uc/item/6rn568h0.

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

MLA Handbook (7^th Edition):

Hsu, Ming-Chen. “Fluid-Structure Interaction Analysis of Wind Turbines.” 2012. Web. 05 Mar 2021.

Vancouver:

Hsu M. Fluid-Structure Interaction Analysis of Wind Turbines. [Internet] [Thesis]. University of California – San Diego; 2012. [cited 2021 Mar 05]. Available from: http://www.escholarship.org/uc/item/6rn568h0.

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

Council of Science Editors:

Hsu M. Fluid-Structure Interaction Analysis of Wind Turbines. [Thesis]. University of California – San Diego; 2012. Available from: http://www.escholarship.org/uc/item/6rn568h0

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

UCLA

21. Sheng, Andrew. Modeling Brittle Fracture Under Thermo-mechanical Loading with Discrete Volterra Dislocation Arrays.

Degree: Mechanical Engineering, 2018, UCLA

URL: http://www.escholarship.org/uc/item/8rk169t5

► The Discrete Crack Mechanics method (DCM) is a dislocation-based crack modeling technique in which crack models are constructed using discrete Volterra dislocation loops. The method… (more)

Subjects/Keywords: Mechanical engineering; Aerospace engineering; Mechanics; Computational fracture; Dislocations; Fracture mechanics; Mesh-independent

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APA (6^th Edition):

Sheng, A. (2018). Modeling Brittle Fracture Under Thermo-mechanical Loading with Discrete Volterra Dislocation Arrays. (Thesis). UCLA. Retrieved from http://www.escholarship.org/uc/item/8rk169t5

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):

Sheng, Andrew. “Modeling Brittle Fracture Under Thermo-mechanical Loading with Discrete Volterra Dislocation Arrays.” 2018. Thesis, UCLA. Accessed March 05, 2021. http://www.escholarship.org/uc/item/8rk169t5.

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

MLA Handbook (7^th Edition):

Sheng, Andrew. “Modeling Brittle Fracture Under Thermo-mechanical Loading with Discrete Volterra Dislocation Arrays.” 2018. Web. 05 Mar 2021.

Vancouver:

Sheng A. Modeling Brittle Fracture Under Thermo-mechanical Loading with Discrete Volterra Dislocation Arrays. [Internet] [Thesis]. UCLA; 2018. [cited 2021 Mar 05]. Available from: http://www.escholarship.org/uc/item/8rk169t5.

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

Council of Science Editors:

Sheng A. Modeling Brittle Fracture Under Thermo-mechanical Loading with Discrete Volterra Dislocation Arrays. [Thesis]. UCLA; 2018. Available from: http://www.escholarship.org/uc/item/8rk169t5

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

University of Colorado

22. Culp, David B. Numerical Coupling of Fracture and Fluid Pressure Using a Phase-Field Model with Applications in Geomechanics.

Degree: MS, 2018, University of Colorado

URL: https://scholar.colorado.edu/cven_gradetds/362

► The application of fracture mechanics is an increasingly important topic in fields including geophysics, geomechanics, materials engineering, structural mechanics and engineering design. The initiation and… (more)

Subjects/Keywords: coupled; phase-field; pressure; mechanics; fluid; Aerodynamics and Fluid Mechanics; Computational Engineering; Physics

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APA (6^th Edition):

Culp, D. B. (2018). Numerical Coupling of Fracture and Fluid Pressure Using a Phase-Field Model with Applications in Geomechanics. (Masters Thesis). University of Colorado. Retrieved from https://scholar.colorado.edu/cven_gradetds/362

Chicago Manual of Style (16^th Edition):

Culp, David B. “Numerical Coupling of Fracture and Fluid Pressure Using a Phase-Field Model with Applications in Geomechanics.” 2018. Masters Thesis, University of Colorado. Accessed March 05, 2021. https://scholar.colorado.edu/cven_gradetds/362.

MLA Handbook (7^th Edition):

Culp, David B. “Numerical Coupling of Fracture and Fluid Pressure Using a Phase-Field Model with Applications in Geomechanics.” 2018. Web. 05 Mar 2021.

Vancouver:

Culp DB. Numerical Coupling of Fracture and Fluid Pressure Using a Phase-Field Model with Applications in Geomechanics. [Internet] [Masters thesis]. University of Colorado; 2018. [cited 2021 Mar 05]. Available from: https://scholar.colorado.edu/cven_gradetds/362.

Council of Science Editors:

Culp DB. Numerical Coupling of Fracture and Fluid Pressure Using a Phase-Field Model with Applications in Geomechanics. [Masters Thesis]. University of Colorado; 2018. Available from: https://scholar.colorado.edu/cven_gradetds/362

23. Bågholt, Christoffer. CFD Analysis of Heat Transfer in an Innovative Facade System.

Degree: Engineering Sciences and Mathematics, 2018, Luleå University of Technology

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-67357

► New innovative façade systems that are well thought out, rational, sustainable and energy efficient are needed for renovation of old buildings to drastically reduce… (more)

Subjects/Keywords: Computational Fluid Mechanics; Heat Transfer; Building Physics; Fluid Mechanics and Acoustics; Strömningsmekanik och akustik

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APA (6^th Edition):

Bågholt, C. (2018). CFD Analysis of Heat Transfer in an Innovative Facade System. (Thesis). Luleå University of Technology. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-67357

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):

Bågholt, Christoffer. “CFD Analysis of Heat Transfer in an Innovative Facade System.” 2018. Thesis, Luleå University of Technology. Accessed March 05, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-67357.

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

MLA Handbook (7^th Edition):

Bågholt, Christoffer. “CFD Analysis of Heat Transfer in an Innovative Facade System.” 2018. Web. 05 Mar 2021.

Vancouver:

Bågholt C. CFD Analysis of Heat Transfer in an Innovative Facade System. [Internet] [Thesis]. Luleå University of Technology; 2018. [cited 2021 Mar 05]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-67357.

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

Council of Science Editors:

Bågholt C. CFD Analysis of Heat Transfer in an Innovative Facade System. [Thesis]. Luleå University of Technology; 2018. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-67357

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

University of Washington

24. Dodd, Michael. Direct numerical simulation of droplet-laden isotropic turbulence.

Degree: PhD, 2017, University of Washington

URL: http://hdl.handle.net/1773/40466

► Interaction of liquid droplets with turbulence is important in numerous applications ranging from rain formation to oil spills to spray combustion. The physical mechanisms of… (more)

▼ Interaction of liquid droplets with turbulence is important in numerous applications ranging from rain formation to oil spills to spray combustion. The physical mechanisms of droplet-turbulence interaction are largely unknown, especially when compared to that of solid particles. Compared to solid particles, droplets can deform, break up, coalesce and have internal fluid circulation. The main goal of this work is to investigate using direct numerical simulation (DNS) the physical mechanisms of droplet-turbulence interaction, both for non-evaporating and evaporating droplets. To achieve this objective, we develop and couple a new pressure-correction method with the volume-of-fluid (VoF) method for simulating incompressible two-fluid flows. The method's main advantage is that the variable coefficient Poisson equation that arises in solving the incompressible Navier-Stokes equations for two-fluid flows is reduced to a constant coefficient equation. This equation can then be solved directly using, e.g., the FFT-based parallel Poisson solver. For a 1024³ mesh, our new pressure-correction method using a fast Poisson solver is ten to forty times faster than the standard pressure-correction method using multigrid. Using the coupled pressure-correction and VoF method, we perform direct numerical simulations (DNS) of 3130 finite-size, non-evaporating droplets of diameter approximately equal to the Taylor lengthscale and with 5~% droplet volume fraction in decaying isotropic turbulence at initial Taylor-scale Reynolds number \Rey_λ=83. In the droplet-laden cases, we vary one of the following three parameters: the droplet Weber number based on the r.m.s. velocity of turbulence (0.1 ≤ \Webrms ≤ 5), the droplet- to carrier-fluid density ratio (1 ≤ ρ_d/ρ_c ≤ 100) or the droplet- to carrier-fluid viscosity ratio (1 ≤ μ_d/μ_c ≤ 100). We derive the turbulence kinetic energy (TKE) equations for the two-fluid, carrier-fluid and droplet-fluid flow. These equations allow us to explain the pathways for TKE exchange between the carrier turbulent flow and the flow inside the droplet. We also explain the role of the interfacial surface energy in the two-fluid TKE equation through work performed by surface tension. Furthermore, we derive the relationship between the power of surface tension and the rate of change of total droplet surface area. This link allows us to explain how droplet deformation, breakup and coalescence play roles in the temporal evolution of TKE. We then extend the code for non-evaporating droplets and develop a combined VoF method and low-Mach-number approach to simulate evaporating and condensing droplets. The two main novelties of the method are: (i) the VOF algorithm captures the motion of the liquid gas interface in the presence of mass transfer due to evaporation and condensation without requiring a projection step for the liquid velocity, and (ii) the low-Mach-number approach allows for local volume changes caused by phase change while the total volume of the liquid-gas… Advisors/Committee Members: Ferrante, Antonino (advisor).

Subjects/Keywords: droplets; fluid mechanics; multiphase flows; turbulence; Fluid mechanics; Computational physics; Mechanical engineering; Aeronautics and astronautics

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APA (6^th Edition):

Dodd, M. (2017). Direct numerical simulation of droplet-laden isotropic turbulence. (Doctoral Dissertation). University of Washington. Retrieved from http://hdl.handle.net/1773/40466

Chicago Manual of Style (16^th Edition):

Dodd, Michael. “Direct numerical simulation of droplet-laden isotropic turbulence.” 2017. Doctoral Dissertation, University of Washington. Accessed March 05, 2021. http://hdl.handle.net/1773/40466.

MLA Handbook (7^th Edition):

Dodd, Michael. “Direct numerical simulation of droplet-laden isotropic turbulence.” 2017. Web. 05 Mar 2021.

Vancouver:

Dodd M. Direct numerical simulation of droplet-laden isotropic turbulence. [Internet] [Doctoral dissertation]. University of Washington; 2017. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1773/40466.

Council of Science Editors:

Dodd M. Direct numerical simulation of droplet-laden isotropic turbulence. [Doctoral Dissertation]. University of Washington; 2017. Available from: http://hdl.handle.net/1773/40466

25. Zhang, Yutong. Computational Flow Analysis of a Cyclone Vacuum Cleaner.

Degree: MS, Engineering, 2019, Rice University

URL: http://hdl.handle.net/1911/105402

► Computational flow analysis of a cyclone vacuum cleaner can provide valuable fluid mechanics information for efficient design and operation. The vacuum cleaner is made of… (more)

Subjects/Keywords: Fluid Mechanics; Computational Fluid Mechanics

…and computer simulation. Our goal is to develop a computational model to simulate the… …computational methods utilized. Chapter 4 covers problem setup and computation details. Chapter 5… …x28;x) is specified as the initial condition. 3 4 5 Chapter 3 Computational… …continuity for the basis function across the surface. Chapter 4 Problem and Computational Setup… …elements. Chapter 5 Computational Results 5.1 Comparison of Single-Cone Steady Inflow and Time…

10 more images…

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APA (6^th Edition):

Zhang, Y. (2019). Computational Flow Analysis of a Cyclone Vacuum Cleaner. (Masters Thesis). Rice University. Retrieved from http://hdl.handle.net/1911/105402

Chicago Manual of Style (16^th Edition):

Zhang, Yutong. “Computational Flow Analysis of a Cyclone Vacuum Cleaner.” 2019. Masters Thesis, Rice University. Accessed March 05, 2021. http://hdl.handle.net/1911/105402.

MLA Handbook (7^th Edition):

Zhang, Yutong. “Computational Flow Analysis of a Cyclone Vacuum Cleaner.” 2019. Web. 05 Mar 2021.

Vancouver:

Zhang Y. Computational Flow Analysis of a Cyclone Vacuum Cleaner. [Internet] [Masters thesis]. Rice University; 2019. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1911/105402.

Council of Science Editors:

Zhang Y. Computational Flow Analysis of a Cyclone Vacuum Cleaner. [Masters Thesis]. Rice University; 2019. Available from: http://hdl.handle.net/1911/105402

University of Windsor

26. Simard, Daniel James. Computational Investigations on Enzymatic Catalysis and Inhibition.

Degree: MS, Chemistry and Biochemistry, 2015, University of Windsor

URL: https://scholar.uwindsor.ca/etd/5440

► Enzymes are the bimolecular “workhorses” of the cell due to their range of functions and their requirement for cellular success. The atomistic details of… (more)

Subjects/Keywords: Computational enzymology; Phosphate cleavage; Quantum mechanics/molecular mechanics; Sulfur intermediates; β-lactamases

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APA (6^th Edition):

Simard, D. J. (2015). Computational Investigations on Enzymatic Catalysis and Inhibition. (Masters Thesis). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/5440

Chicago Manual of Style (16^th Edition):

Simard, Daniel James. “Computational Investigations on Enzymatic Catalysis and Inhibition.” 2015. Masters Thesis, University of Windsor. Accessed March 05, 2021. https://scholar.uwindsor.ca/etd/5440.

MLA Handbook (7^th Edition):

Simard, Daniel James. “Computational Investigations on Enzymatic Catalysis and Inhibition.” 2015. Web. 05 Mar 2021.

Vancouver:

Simard DJ. Computational Investigations on Enzymatic Catalysis and Inhibition. [Internet] [Masters thesis]. University of Windsor; 2015. [cited 2021 Mar 05]. Available from: https://scholar.uwindsor.ca/etd/5440.

Council of Science Editors:

Simard DJ. Computational Investigations on Enzymatic Catalysis and Inhibition. [Masters Thesis]. University of Windsor; 2015. Available from: https://scholar.uwindsor.ca/etd/5440

27. Mallone, Kevin Charles. A more robust wall model for use with the two-equation turbulence model.

Degree: PhD, 1995, University of Hertfordshire

URL: http://hdl.handle.net/2299/14149

► The applicability of computational fluid dynamics (CFD) modelling schemes to turbulent wall-bounded flows is a matter of concern. In the near-wall region of bounded flows,… (more)

▼ The applicability of computational fluid dynamics (CFD) modelling schemes to turbulent wall-bounded flows is a matter of concern. In the near-wall region of bounded flows, the standard high Reynolds number k-e model is not valid and requires the use of empirical wall models to mimic the behaviour of this region. A theoretical study of the physics of prevalent wall modelling techniques showed that the velocity distribution took no account of the pressure gradient. To determine the effect of this shortcoming, a typical transient three-dimensional flow was analysed using current CFD methods and the results compared with experimental flow measurements. Consideration of these results showed that the 'traditional' wall model was unable to replicate observed flow features in the near-wall region: further analysis of the computational results confirmed that these poor flow predictions arose from the inability of the model to consider local pressure gradient effects. Consequently, a strong case was made for a more robust wall model for use in conjunction with the standard high Reynolds number k-e model. A number of boundary layer analyses were reviewed and Coles' law of the wake (1956) presented as a viable candidate for the development of a new wall modelling scheme. In theory, Coles' law (1956) provides a description of bounded flows under arbitrary pressure gradients up to the point of near-separation and may be extended to the study of reversed flows. A generic algorithm for Coles' law was prepared and used to study the fundamental test cases of U-bend and backward facing step flows. In a comparison between documented experimentation, 'conventional' CFD modelling and Coles' law models of these flows, the Coles' law model was shown to provide a viable alternative to 'traditional' schemes. Consequently, the Coles' law model of the near-wall region, being valid for pressure-driven flows, offers an extension to the range of flows for which the standard high Reynolds number k-e model may be used.

Subjects/Keywords: 532; Computational fluid mechanics, Fluid mechanics

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APA (6^th Edition):

Mallone, K. C. (1995). A more robust wall model for use with the two-equation turbulence model. (Doctoral Dissertation). University of Hertfordshire. Retrieved from http://hdl.handle.net/2299/14149

Chicago Manual of Style (16^th Edition):

Mallone, Kevin Charles. “A more robust wall model for use with the two-equation turbulence model.” 1995. Doctoral Dissertation, University of Hertfordshire. Accessed March 05, 2021. http://hdl.handle.net/2299/14149.

MLA Handbook (7^th Edition):

Mallone, Kevin Charles. “A more robust wall model for use with the two-equation turbulence model.” 1995. Web. 05 Mar 2021.

Vancouver:

Mallone KC. A more robust wall model for use with the two-equation turbulence model. [Internet] [Doctoral dissertation]. University of Hertfordshire; 1995. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/2299/14149.

Council of Science Editors:

Mallone KC. A more robust wall model for use with the two-equation turbulence model. [Doctoral Dissertation]. University of Hertfordshire; 1995. Available from: http://hdl.handle.net/2299/14149

The Ohio State University

28. Gardner, Kevin Alexander. Experimental Study of Air Blast and Water Shock Loading on Automotive Body Panels.

Degree: PhD, Mechanical Engineering, 2016, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1468938824

► Analytical solutions to fluid-structure interaction (FSI) problems provide a powerfuldesign tool that has many applications within the automotive industry. Theinteraction of body panels with various… (more)

▼ Analytical solutions to fluid-structure interaction (FSI) problems provide a powerfuldesign tool that has many applications within the automotive industry. Theinteraction of body panels with various fluid flows is of interest. Automotive panelsthat are made too thin become susceptible to a phenomenon known as oil-canning.The deformation can be temporary, or if the loading is large enough the panel cansnap through, possibly resulting in permanent deformation. One common occurrenceof oil-canning is when going through the dryer section of an automatic car wash.For small deformations the panel can shift between various unstable elastic configurationsresulting in loud popping noises within the passenger compartment. Largedeformations can result in permanent deformation and pitting of the roof panel.Automotive underbody panels are susceptible to water shock loadings that canbe generated when driving over a puddle at high speeds. Panels that are made toothin can be permanently deformed or even fail in some cases when the water shockloading is strong enough. Accurate simulations of these scenarios are of interest sincethinning body panels provides an easy way to realize significant weight reduction andincrease fuel economy.An experimental program is introduced where full size automotive roof panels aresubjected to air blast loading. The panels are stamped from thin alloy sheet steel.Roof panels are loaded into a custom test rig and clamped along the weld flanges.The air blast is generated using a commercial air compressor and a 35.1 mm pipe.Force imparted on the panel by the air jet is measured by three load cells and full-fielddisplacement data is captured using three-dimensional digital image correlation(DIC). The flow field is characterized using piezo-resistive pressure transducers placedin a sensor bar apparatus that can be swept across the flow field to generate pressuremaps. The pressure transducers are also mounted to the roof panels to record surfacepressures during testing.Water jet experiments are performed on automotive underbody panels stampedfrom thin aluminum sheet. The panels are bolted into a custom test rig and the waterjet loading is generated with a commercial pressure washer. The force on the panelsis measured with four load cells and full-field displacement data is obtained from theback side of the panel using three-dimensional digital image correlation. The flowfield is characterized through the use of high speed cameras mounted orthogonally toobtain jet velocity measurements and qualitative properties. Additional experimentsare performed on the underbody panels using a water cannon that fires a slug ofwater contained within a latex balloon at high velocity in an effort to more accuratelyrecreate a water splash event and permanently deform the underbody panels. Thevelocity and qualitative properties of the water slugs are measured using orthogonallymounted high speed cameras. Concurrent simulations will be performed by HondaR&D Americas, Inc. and compared to the experimental data from this study to… Advisors/Committee Members: Gilat, Amos (Advisor).

Subjects/Keywords: Mechanical Engineering; Experimental mechanics; fluid structure interaction; dynamic behavior of materials; computational mechanics

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APA (6^th Edition):

Gardner, K. A. (2016). Experimental Study of Air Blast and Water Shock Loading on Automotive Body Panels. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1468938824

Chicago Manual of Style (16^th Edition):

Gardner, Kevin Alexander. “Experimental Study of Air Blast and Water Shock Loading on Automotive Body Panels.” 2016. Doctoral Dissertation, The Ohio State University. Accessed March 05, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1468938824.

MLA Handbook (7^th Edition):

Gardner, Kevin Alexander. “Experimental Study of Air Blast and Water Shock Loading on Automotive Body Panels.” 2016. Web. 05 Mar 2021.

Vancouver:

Gardner KA. Experimental Study of Air Blast and Water Shock Loading on Automotive Body Panels. [Internet] [Doctoral dissertation]. The Ohio State University; 2016. [cited 2021 Mar 05]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1468938824.

Council of Science Editors:

Gardner KA. Experimental Study of Air Blast and Water Shock Loading on Automotive Body Panels. [Doctoral Dissertation]. The Ohio State University; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1468938824

The Ohio State University

29. Kowalski, Benjamin John. Transient SH-Wave Interaction with a Cohesive Interface.

Degree: MS, Mechanical Engineering, 2014, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1417706326

► Characterization of material damage at the interface between two bodies using non-destructive evaluation (NDE) techniques is a field of study that is important from the… (more)

Subjects/Keywords: Mechanics; Engineering; Mechanical Engineering; Non-destructive Evaluation; Wave Propagation; Cohesive Zones; Boundary Element Method; Computational Mechanics; Applied Mechanics

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APA (6^th Edition):

Kowalski, B. J. (2014). Transient SH-Wave Interaction with a Cohesive Interface. (Masters Thesis). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1417706326

Chicago Manual of Style (16^th Edition):

Kowalski, Benjamin John. “Transient SH-Wave Interaction with a Cohesive Interface.” 2014. Masters Thesis, The Ohio State University. Accessed March 05, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1417706326.

MLA Handbook (7^th Edition):

Kowalski, Benjamin John. “Transient SH-Wave Interaction with a Cohesive Interface.” 2014. Web. 05 Mar 2021.

Vancouver:

Kowalski BJ. Transient SH-Wave Interaction with a Cohesive Interface. [Internet] [Masters thesis]. The Ohio State University; 2014. [cited 2021 Mar 05]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1417706326.

Council of Science Editors:

Kowalski BJ. Transient SH-Wave Interaction with a Cohesive Interface. [Masters Thesis]. The Ohio State University; 2014. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1417706326

University of Cincinnati

30. Kamble, Mithil. Development of a Polygonal Finite Element Solver and Its Application to Fracture Problems.

Degree: MS, Engineering and Applied Science: Mechanical Engineering, 2017, University of Cincinnati

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504873845916901

► This study develops a polygonal finite element solver for 2-D crack propagation simulation along with a meshing algorithm which creates necessary polygonal mesh.The work starts… (more)

Subjects/Keywords: Mechanical Engineering; Mechanics; Polygonal finite element method; Polygonal interpolants; Finite element methods; Fracture mechanics; Computational fracture mechanics; Crack propagation

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APA (6^th Edition):

Kamble, M. (2017). Development of a Polygonal Finite Element Solver and Its Application to Fracture Problems. (Masters Thesis). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504873845916901

Chicago Manual of Style (16^th Edition):

Kamble, Mithil. “Development of a Polygonal Finite Element Solver and Its Application to Fracture Problems.” 2017. Masters Thesis, University of Cincinnati. Accessed March 05, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504873845916901.

MLA Handbook (7^th Edition):

Kamble, Mithil. “Development of a Polygonal Finite Element Solver and Its Application to Fracture Problems.” 2017. Web. 05 Mar 2021.

Vancouver:

Kamble M. Development of a Polygonal Finite Element Solver and Its Application to Fracture Problems. [Internet] [Masters thesis]. University of Cincinnati; 2017. [cited 2021 Mar 05]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504873845916901.

Council of Science Editors:

Kamble M. Development of a Polygonal Finite Element Solver and Its Application to Fracture Problems. [Masters Thesis]. University of Cincinnati; 2017. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504873845916901

Open Access Theses and Dissertations