Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 115 for “"two-dimensional model"”.
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A two dimensional model of magnetic field assisted assembly
A simplified model to simulate the magnetic field distribution for applications in magnetic field assisted assembly of semiconductor device structures, using commercial software (Vizimag), has been implemented. Solenoids have been utilized to serve as electromagnets that are responsible for the …
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Development of a two-dimensional model of blood microcirculation flows
… of a dimensionless blood microcirculation model for the study of blood microcirculation flows. It is a two dimensional, axially symmetric, incompressible, Newtonian-flow, Krogh cylinder model subjected to axially periodic boundary conditions. This model formulation allows for the use of the …
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A two-dimensional model to predict rotating stall in axial-flow compressors
… environmental and control inputs. Computer models have been developed to simulate this response. The primary inputs to these models are the wide-range, steady-state compressor stage characteristics. To reduce the dependence of these dynamic models on experimental performance data, …
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A Generalized Two-Dimensional Model to Reconstruct the Impact Phase in Automobile Collisions
… required for proper application of the computer model in a given accident scenario. Vehicle collision analysis techniques generally separate the collision into three phases: pre-impact, impact, and post impact. The intent of the research is to provide a generalized model to reconstruct two …
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Development of a One and Two-Dimensional Model for Calculating Pore Pressure in an Ablating Thermal Sacrificial Liner
… The PorePress code is essentially a 1- and 2-dimensional differential equation solver for mixed, unstructured geometries. Specifically, the code is used for solving a coupled form of the Ideal Gas Law, Conservation of Mass, and Conservation of Momentum Equations, which describe the flow and …
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Building model generation project : generating a model of the MIT campus terrain
… automatically generated and frequently updated model of the MIT campus leads the way to many valuable applications, ranging from three-dimensional navigation to virtual tours. In this thesis, we present a set of application tools for generating a properly labeled, well-structured …
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Modeling Flows for Assessing Tidal Energy Generation Potential
… can be accomplished by using numerical hydraulic models to predict the flow velocity at a location of interest. The East River in Manhattan has been used here in an effort to develop a modeling methodology for assessing the power potential of a site. Two two-dimensional CFD models, FESWMS and …
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Modelling the Thermal Dynamics of Polygonal Soil Structures in the Permafrost of the Lena Delta, Northern Siberia
… Arctic. In this thesis, an existing permafrost model including conductive heat transfer and the phase change of water is extended to simulate the thermal dynamics of polygonal soil structures in an Arctic tundra wetland in Northern Siberia. A two-dimensional model formulation in cylindrical …
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JEMEZ RIVER CASE STUDY: UTILIZING A FROUDE NUMBER SIMILITUDE PHYSICAL MODEL, 1-D MOBILE BED NUMERICAL MODEL, AND A 2-D FIXED BED NUMERICAL MODEL FOR WEIR DESIGN INSIGHT
Physical and numerical models have been widely used to describe flooding patterns and to gain further understanding of river hydraulics around complex structures. Located on the Jemez River in New Mexico, the Jemez Weir stops the upstream progression of stream degradation and supports healthy …
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Using Multiple Biological Markers to Measure Sickle-Cell Disease Severity and Cognitive Risk
… recent evidence suggests that SCD may consist of two clinical sub-phenotypes, whereas previous studies have treated SCD severity as a unitary construct. This study aimed to examine the relationship between biological measures of disease severity and cognitive deficits in children with SCD. We …
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Control-oriented modeling and adaptive parameter estimation of a lithium ion intercalation cell
… and state estimators based on electrochemical models for Lithium ion cells, are promising efficient use and safety of the battery. In this thesis, two findings related to electrochemical model based estimation are presented - first an extended adaptive observer for a Li-ion cell and second a …
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Attachment, Filial Piety, and Mental Health: Testing Cultural Influence on the Attachment-Mental Health Link Among Taiwanese High School Students
… regarding the appropriateness of applying the two-dimensional model of attachment to contexts outside of the U.S. Furthermore, findings from the study significantly extend the extant literature by providing support for the mediating role of a culturally relevant construct (filial piety) in …
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The Development of a Computational Model of Thrombosis in Hemodialysis Catheters
… Previous work conducted at BYU successfully modeled TE in a simple, two-dimensional flow cell design by adding quantitative TE code to a commercial computational fluid dynamics (CFD) package, Fluent. This two-dimensional model predicted thrombus initiation and growth and adjusted flow to …
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The Effect of the 2-Dimensional Magnetic Field Profile in Hall Thrusters
… field structure was investigated using a simple, two-dimensional model, assuming axial symmetry. The previous one-dimensional conclusion, namely that the details of the shape of the magnetic field are unimportant, was confirmed. This result has implications for the design of future Hall thruster …
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Three-dimensional finite element modeling of steady state seepage using the computer program 'SEEPS3D'
A three-dimensional finite element model for the analysis of steady state seepage has been presented in this study. The theory of unsaturated flow has been used in the analysis of steady state seepage. The model applies the invariant mesh procedure in the finite element analysis. Galerkin's method …
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Large Scale Hydrodynamic Simulations of Emulsions and Foams
… tolerance. Zinchenko and Davis performed three-dimensional at volume fractions up to 55%. Owing to this limitation, their study exhibited no disorder to order transitions, deviation from homogenous linear shear, or formation of thin liquid films. Though the results of the present study come from …
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Implementing Control-oriented Meta-learning on Hardware
… has already been derived and simulated for a two-dimensional model. This project explores the implementation of the control-oriented meta-learning algorithm on a hardware platform. After extending the algorithm to a three-dimensional model, it was tested in a physics-based simulator and …
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Diffusion driven object propulsion in density stratified fluids
… in order to verify the appropriateness of a two dimensional model of the flow creating diffusion driven object propulsion in density stratified fluids. Initial flow field experiments studying the phenomena that drives the so called diffusion fish indicated that there may be an unaccounted for …
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A Computational Model of the Ocular Lens
… of this project is to develop a computational model of the structure and function of the ocular lens, specifically the solute and fluid transport in the lens. The modelling framework was based on finite volume methods. The intracellular and extracellular solute fluxes were modelled using the …
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Statistical mechanics of strongly driven Ising systems
This work considers the behavior of the Ising model of a ferromagnet subject to a strong, randomly switching external driving field. A formalism based on the master equation to handle such nonequilibrium systems is introduced and applied to a mean field approximation, and one- and two-dimensional …
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