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  • Swept time-space domain decomposition on GPUs and heterogeneous computing systems

    Creator:
    Magee, Daniel J.
    Abstract:
    Modern scientific and engineering problems often require simulations with a level of resolution difficult to achieve in reasonable amounts of time—even in effectively parallelized programs. Therefore, applications that exploit high performance computing (HPC) systems have become invaluable in academia and industry over the past two decades. Addressing the questions that...
    Resource Type:
    Masters Thesis
    Full Text:
    -space domain decomposition on GPUs and heterogeneous computing systems Abstract approved: Kyle

  • Evaluating Stiffness Metrics for Predicting the Cost of Chemical Kinetics Integration

    Creator:
    Alferman, Andrew Thomas
    Abstract:
    Simulations of combustion and reacting flows often encounter stiffness in the equations governing chemical kinetics. Explicit solvers for these ordinary differential equations offer low computational expense, but typically cannot efficiently handle stiff systems. In contrast, implicit methods demand greater expense but offer unconditional stability—as a result, most reactive-flow solvers rely...
    Resource Type:
    Masters Thesis
    Full Text:
    Stiffness Metrics for Predicting the Cost of Chemical Kinetics Integration Abstract approved: Kyle

  • Predicting Properties of Bio-jet Fuels using Machine Learning and ATR-FTIR Spectroscopy

    Creator:
    Mayer, Morgan A.
    Abstract:
    High-potential molecules derived from biomass sources may suitably replace or supplement traditional nonrenewable hydrocarbon fuels to reduce pollution and fuel processing costs. Due to expensive and time-consuming property testing, models that predict key properties from optical data would initially vet potential additives before investment and bench-scale testing. Attenuated Total Reflection...
    Resource Type:
    Masters Thesis
    Full Text:
    : Kyle E. Niemeyer High-potential molecules derived from biomass sources may suitably replace or supple

  • Generalized Preconditioning to Accelerate Simulations with Large Multiphase Chemical Kinetics Models

    Creator:
    Walker, Anthony S.
    Abstract:
    Combustion emissions produced from burning real transportation fuels have many environmental impacts. However, detailed chemistry across multiple phases, time scales, and thermodynamic conditions make predicting combustion emissions challenging. Detailed modeling of the gas phase alone is prohibitively expensive, due to the large size and stiffness of the kinetic models. The...
    Resource Type:
    Dissertation
    Full Text:
    accelerating simulations with large kinetic models Anthony S. Walker, Raymond L. Speth, & Kyle E. Niemeyer My

  • Computational Modeling of Smoldering Combustion in Wildland Fuels

    Creator:
    Jayasuriya, Waduge Jayani A.
    Abstract:
    Smoldering combustion in wildland fires is a critical phenomenon that needs in-depth study because it can initiate with weaker ignition sources, can persist for long periods, is difficult to suppress, and can transit to flaming combustion. Cellulose, hemicellulose, and lignin are the major organic constituents within biomass, in varying proportions...
    Resource Type:
    Dissertation
    Full Text:
    approved: Kyle E. Niemeyer Smoldering combustion in wildland fires is a critical phenomenon that needs in

  • Optimization & Qualification of a Liquid Engine Launch Vehicle Design Using 6DoF Simulations

    Creator:
    Rose, Trevor J.
    Abstract:
    In this work, I developed a six degree of freedom flight simulator specific to liquid engine launch vehicles. This flight simulator improves upon available software by accounting for liquid engine specific phenomena such as tank pressurization, liquid engine performance, and center of gravity modeling. Additionally, I implemented methods for optimization...
    Resource Type:
    Masters Thesis
    Full Text:
    & Qualification of a Liquid Engine Launch Vehicle Design Using 6DoF Simulations Abstract approved: Kyle E

  • Integrated small broomrape (Orobanche minor Sm.) management in red clover (Trifolium pratense L.)

    Creator:
    Ross, Kyle C.
    Abstract:
    Small broomrape, a holoparasitic weed, is a relatively new weed introduction in the Pacific Northwest that has contaminated a limited number of red clover fields in Oregon. Greenhouse and field studies were conducted to evaluate small broomrape response to common crop and weed species in the Pacific Northwest. Host species...
    Resource Type:
    Masters Thesis
    Full Text:
    .) management in red clover (Trifolium pratense L.) AN ABSTRACT OF THE THESIS OF Kyle C. Ross for the degree

  • Electric Actuation of the Main Flight Valves of a Small Bi-Propellant Liquid Engine

    Creator:
    Edgerton, Jacob M.
    Abstract:
    The High Altitude Liquid Engine (HALE) team is developing of a 2000 lbf thrust liquid propellant engine for a flight vehicle capable of breaching the Karman Line (100 km in altitude). As part the development of this flight vehicle, this research focuses on the design and characterization of a novel...
    Resource Type:
    Honors College Thesis
    Full Text:
    Small Bi-Propellant Liquid Engine Abstract approved: Kyle Niemeyer The High Altitude Liquid Engine

  • Host and Pathogen Contributions to the Populus–Sphaerulina Pathosystem

    Creator:
    Mondron Kyle T.
    Abstract:
    Sphaerulina musiva is a fungal pathogen that causes Septoria leaf spot and stem canker on susceptible Populus species and hybrids. In this thesis, host and pathogen contributions to Septoria stem canker disease were explored through: 1) a greenhouse study associating Septoria stem canker phenotypes with molecular markers from a genetic...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Kyle Thomas

  • Cooling System Analysis of the Thrust Chamber

    Creator:
    Sazonov, Gleb
    Abstract:
    The purpose of the study was to analyze the possible combination of cooling systems, which are film cooling and regenerative cooling, and obtain the initial estimates of possible temperature reduction. The analysis was conducted in Ansys Fluent. The methodology includes four main steps that are the following: flow simulation, combustion...
    Resource Type:
    Capstone Project
    Full Text:
    System Analysis of the Thrust Chamber Abstract approved: Kyle E. Niemeyer The purpose of the study was