Index Catalog // ScholarsArchive@OSU

Hybrid Multiscale Methods with Applications to Semiconductors, Porous Media, and Materials Science

Creator:: Costa, Timothy B.
Abstract:: In this work we consider two multiscale applications with tremendous computational complexity at the lower scale. First, we examine a model for charge transport in semicon- ductor structures with heterojunction interfaces. Due to the complex physical phenomena at the interface, the model at the design scale is unable to adequately...
Resource Type:: Dissertation

Interpolation Schemes for Two Dimensional Flow with Applications

Creator:: Umhoefer, Joseph G.
Abstract:: In this thesis we study a numerical analysis problem motivated by the need to simulate an event such as an oil spill in a deep water environment. Numerical simulation can help to mitigate the disastrous effects of such events by aiding the management of risk assessment and recovery efforts. However,...
Resource Type:: Masters Thesis

A numerical study of viscous, incompressible fluid flow problems

Creator:: Terry, Michael D.
Abstract:: The mathematical technique of overrelaxation is used here to speed the convergence of a numerical method for solving viscous, incompressible fluid flow problems. The method, called MAC, involves approximating the complete two-dimensional incompressible Navier-Stokes equations with analogous finite-difference equations. The MAC method was developed by the Los Alamos Scientific Laboratory...
Resource Type:: Masters Thesis

Simple models for the structure and dynamics of polyatomic fluids

Creator:: James, Corinne Patricia
Abstract:: Three areas of liquid state theory are considered. First, Monte Carlo computer simulation of a two-dimensional hard disk fluid with an imbedded ellipse was undertaken to determine how a non-spherical molecule affects intermolecular ordering. The elliptical molecule (with axial ratios of 2, 5 and 10) altered the isotropic distribution of...
Resource Type:: Dissertation

A numerical study of inertial flow features in moderate Reynolds number flow through packed beds of spheres

Creator:: Finn, Justin Richard
Abstract:: In this work, flow through synthetic arrangements of contacting spheres is studied as a model problem for porous media and packed bed type flows. Direct numerical simulations are performed for moderate pore Reynolds numbers in the range, 10 ≤ Re ≤ 600, where non-linear porescale flow features are known to...
Resource Type:: Dissertation

Modelling, validation and simulation of multi-degree-of-freedom nonlinear stochastic barge motions

Creator:: Bartel, Warren A.
Abstract:: Recent developments in estimation of the survivability of a U.S. Navy transport barge in random seas are extended to improve accuracy. The single Degree-of-Freedom (DOF) model of a extreme roll response of a barge used in previous research is replaced by a 3-DOF roll-heave-sway model to include linear and nonlinear...
Resource Type:: Masters Thesis

Stochastic analysis of flow and transport in porous media

Creator:: Vasylkivska, Veronika S.
Abstract:: Random fields are frequently used in computational simulations of real-life processes. In particular, in this work they are used in modeling of flow and transport in porous media. Porous media as they arise in geological formations are intrinsically deterministic but there is significant uncertainty involved in determination of their properties...
Resource Type:: Dissertation

A numerical model of drop-on demand droplet formation from a vibrating nozzle and a rigid nozzle

Creator:: Yang, Guozhong
Abstract:: Droplet formation from a rigid and a vibration nozzle driven by a pulsing pressure is simulated. Droplet formation is simulated by using one-dimensional model. For the case of droplet formation from a vibration nozzle, the nozzle vibration is simulated by large deflection plate vibration equation. Droplet formation from a rigid...
Resource Type:: Masters Thesis

An experimental study and a three-dimensional numerical wave basin model of solitary wave impact on a vertical cylinder

Creator:: Zhang, Wenbin
Abstract:: An experiment on solitary wave impact on a vertical cylinder was conducted in the three-dimensional wave basin at the Oregon State University Hinsdale Wave Research Laboratory. The cylinder was designed using mechanic principles and finite element analysis techniques to enable accurate measurement of horizontal force and overturning moment. Video data...
Resource Type:: Masters Thesis

Physical processes that control droplet transport in rock fracture systems

Creator:: Hay, Katrina M.
Abstract:: Aquifer recharge is generally driven by fluids that move from the Earth’s surface to groundwater through the unsaturated zone, also known as the vadose zone. When the vadose zone is fractured, fluids, which may include contaminants, can move through the fracture network as well as the porous matrix. Such a...
Resource Type:: Dissertation

ScholarsArchive@OSU

Hybrid Multiscale Methods with Applications to Semiconductors, Porous Media, and Materials Science

Interpolation Schemes for Two Dimensional Flow with Applications

A numerical study of viscous, incompressible fluid flow problems

Simple models for the structure and dynamics of polyatomic fluids

A numerical study of inertial flow features in moderate Reynolds number flow through packed beds of spheres

Modelling, validation and simulation of multi-degree-of-freedom nonlinear stochastic barge motions

Stochastic analysis of flow and transport in porous media

A numerical model of drop-on demand droplet formation from a vibrating nozzle and a rigid nozzle

An experimental study and a three-dimensional numerical wave basin model of solitary wave impact on a vertical cylinder

Physical processes that control droplet transport in rock fracture systems

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