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Filtering by: Subject Fluid dynamics -- Mathematical models Remove constraint Subject: Fluid dynamics -- Mathematical models Degree Level Master's Remove constraint Degree Level: Master's

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  • 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
    Full Text:
    NUMERICAL STUDY OF VISCOUS, INCOMPRESSIBLE FLUID FLOW PROBLEMS Redacted for Privacy_ Abstract approved

  • Winter cover cropping effects on integrative biological indicators of soil quality

    Creator:
    Ndiaye, Evelyne L.
    Abstract:
    Responses of biological indicators of soil quality to winter cover cropping were measured on soil samples collected from 6 commercial growers' fields and two experiment research stations in the Willamette Valley of Oregon. The research stations were the North Willamette Research and Extension Center (Aurora, OR), and the Oregon State...
    Resource Type:
    Masters Thesis
    Full Text:
    organic matter but it is a dynamic, living component that is involved in various biogeochemical

  • Using a single-well push-pull test to estimate mass transfer rate parameters

    Creator:
    Kelley, Michael John
    Abstract:
    More efficient methods are needed for the in-situ evaluation of mass transfer parameters which describe the movement of solutes through aquifer material. The objective of this study was to develop a method for estimating diffusion rate and capacity coefficients using a single-well, "push-pull" tracer test. The method consists of the...
    Resource Type:
    Masters Thesis
    Full Text:
    2.4 Mathematical Model 22 3. PHYSICAL AQUIFER MODF.T. (PAM) 27 3.1 Overview and Background

  • 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
    Full Text:
    model and marker-and-cell front tracking technique. The fluid was considered as incompressible. He

  • 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
    Full Text:
    . EQUATIONS OF MOTION A mathematical model representative of the physics of the fluid structure

  • 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
    Full Text:
    algorithms that provide a smooth field from given discrete data. The Blowout and Spill Occurrence Model

  • 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
    Full Text:
    Lagrangian-Eulerian (ALE) option for the fluid to model full-scale fluid-structure interaction laboratory

  • Prediction of Initial Mixing for Municipal Ocean Discharges

    Creator:
    Teeter, Allan M. and Baumgartner, D. J.
    Abstract:
    The purpose of this report is to present procedures by which applicants and reviewers can calculate initial dilution and describe the zone of initial dilution surrounding the discharge site. These calculations would be required under regulations proposed by the U.S. Environmental Protection Agency on April 25, 1978 (1) implementing section...
    Resource Type:
    Capstone Project
    Full Text:
    unconfined environments. Sotil (17) posed a mathematical model for slot jets or continuous line sources in

  • RANS and LES predictions of turbulent scalar transport in dead zones of natural streams

    Creator:
    Drost, Kevin J.
    Abstract:
    Natural stream systems contain a variety of flow geometries which contain flow separation, turbulent shear layers, and recirculation zones. This work focuses on streams with dead zones. Characterized by slower flow and recirculation, dead zones are naturally occurring cutouts in stream banks. These dead zones play an important role in...
    Resource Type:
    Masters Thesis
    Full Text:
    zone. Using these fluid quantities and a simplified model of the dead zone, the residence time could

  • An analysis of wave forces on prototype walls under tsunami loading

    Creator:
    Oshnack, Mary Elizabeth
    Abstract:
    This thesis is comprised of two manuscripts based on a laboratory experiment conducted to examine realistic wave forcing on a vertical wall subjected to tsunami loading. The first manuscript examined tsunami force and pressure distributions on a rigid wall that was fronted by a small seawall. Six different seawall heights...
    Resource Type:
    Masters Thesis
    Full Text:
    the fluid-structure interaction. This work was conducted in the Large Wave Flume adjacent to the