Browsing by Author "Lazarov, Raytcho"
Now showing items 21-40 of 80
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Gomez Constante, Juan Pablo (2018-07-02)Inspired in the work of Poiseuille, and taking advantage of the much more realistic model for describing the mechanical properties of blood in large vessels derived by K. R. Rajagopal, this dissertation explains the behavior ...
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Lee, Chak Shing (2016-07-29)Many science and engineering problems exhibit scale disparity and high contrast. The small scale features cannot be omitted in the physical models because they can affect the macroscopic behavior of the problems. However, ...
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Moon, Minam (2015-06-05)This dissertation is devoted to the development, study and testing of numerical methods for elliptic and parabolic equations with heterogeneous coefficients. The motivation for this study is to meet the need for fast and ...
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Li, Yanbo (2019-07-17)Many practical problems are modeled by partial differential equations with highly heterogeneous coefficients. Classical numerical methods for solving these problems typically require very fine computational meshes, and are ...
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Ye, Shuai (2016-12-09)Many engineering and scientific applications deal with models that have multiple spatial scales, and these scales can be non-separable. Many of these processes can exhibit nonlinearities and have a tight coupling with the ...
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Park, Jun Sur (2020-05-14)Simulation in media with multiple interacting continua is often challenging due to distinct properties of the continua, multiple scales and high contrast. Thus, some type of model reduction is required. One of the approaches ...
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Hua, Yuchen (2019-05-24)In this dissertation we develop high order invariant domain preserving schemes for general hyperbolic systems. The schemes are based on the general central schemes of formally second, third and fourth order accuracy. The ...
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Manolov, Sergiy (2013-03-14)In this thesis we investigate coupling and preconditioning techniques for 19D hybrid neutronics calculations. Each problem is represented by two spatial regions with Sn in one region and either Diffusion (P1) or P3 in the ...
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Yang, Mei (2011-10-21)Hydraulic Fracturing is a technique to accelerate production and enhance ultimate recovery of oil and gas while fracture geometry is an important aspect in hydraulic fracturing design and optimization. Systematic design ...
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Boutros, Clara (2021-07-06)The purpose of this research is to provide discrete ordinates transport discretization methods for RZ geometry that have second order truncation error for the problems that have smooth solutions, accurate solution for thick ...
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Chambers, Steven B. (Texas A&M University, 2005-02-17)Computational Fluid Dynamics (CFD) is a field that is constantly advancing. Its advances in terms of capabilities are a result of new theories, faster computers, and new numerical methods. In this thesis, advances in the ...
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Barbu, Anthony Petru (2022-04-11)We develop, analyze, and test iterative methods for three kinds of multigroup transport problems: (1) k-eigenvalue neutronics, (2) thermal radiation transport, and (3) problems with “upscattering,” in which particles can ...
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Kolev, Tzanio Valentinov (Texas A&M University, 2004-11-15)The modeling of electromagnetic phenomena described by the Maxwell's equations is of critical importance in many practical applications. The numerical simulation of these equations is challenging and much more involved ...
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Yao, Xianghan (2014-08-10)Graphene electrons possess linear energy dispersion relation, and thus behave as two-dimensional (2D) Dirac fermions. Consequently, compared with the conventional 2D electron gas systems (2DEG) found in MOSFETs and quantum ...
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Protasov, Anastasiya N (2016-05-02)Many applications such as porous media and material science possess multiscale nature of media properties and high number of variables. As a result, forward problems on today’s computer architectures require high cost of ...
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Khalmanova, Dinara Khabilovna (Texas A&M University, 2004-09-30)Motivated by the reservoir engineering concept of the productivity index of a producing oil well in an isolated reservoir, we analyze a time dependent functional, diffusive capacity, on the solutions to initial boundary ...
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Dutta, Sourav (2017-07-28)We study multiphase, multicomponent flow of incompressible fluids through porous media. Such flows are of vital interest in various applied science and engineering disciplines like geomechanics, groundwater flow and ...
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Zhang, Jingyan (2021-11-24)Numerical simulation of problems involving media with multiple spatial scales has important applications in many engineering and scientific areas, including material science, chemistry and unconventional reservoir simulation. ...
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Cheung, Siu Wun (2020-03-12)Numerical modelling of flow problems in fractured porous media has important applications in many engineering areas, such as unconventional reservoir simulation and nuclear waste disposal. Simulation of the flow problems ...
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Martin, Michael (2012-07-16)Lithium ion battery systems are promising solutions to current energy storage needs due to their high operating voltage and capacity. Numerous efforts have been conducted to model these systems in order to aid the design ...