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Filtering by: Creator Townsend, M. S. Remove constraint Creator: Townsend, M. S. Committee Member Squires, Nancy Remove constraint Committee Member: Squires, Nancy Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering

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  • The geometric characterization and thermal performance of a microchannel heat exchanger for diesel engine waste heat recovery

    Creator:
    Yih, James S.
    Abstract:
    Rising energy demands and the continual push to find more energy efficient technologies have been the impetus for the investigation of waste heat recovery techniques. Diesel engine exhaust heat utilization has the potential to significantly reduce the consumption of fossil fuels and reduce the release of greenhouse gases, because diesel...
    Resource Type:
    Masters Thesis
    Full Text:
    James S. Yih for the degree of Master of Science in Mechanical Engineering presented on November 29

  • Effects of thermal stressing on the turbulent flame speed of jet fuel

    Creator:
    Alkhalifa, Ammar M.
    Abstract:
    Gas turbine engines for propulsion applications can use fuel as a coolant, exposing the fuel to high temperatures well within the ranges associated with thermal decomposition. Species produced as a result of these processes have been shown to correlate with changes in the combustion performance of the fuels. In this...
    Resource Type:
    Honors College Thesis
    Full Text:
    % confidence. The global turbulent consumption speed is in the range of 1.9 to 2.05 m/s, with typical

  • Bio-Inspired Design of Vehicles that Operate in Complex Environments

    Creator:
    Jackson, Danielle M.
    Abstract:
    This dissertation focuses on defining underlying mechanisms to enable the bio-inspired design of aerodynamic and/or hydrodynamic vehicles that operate within complex environments. This dissertation introduces four overarching research gaps found in current bio-inspired design research and four corresponding approach questions that guide the framework of the presented research. This research...
    Resource Type:
    Dissertation

  • Practical Application of the Finite Element Method for Vehicle System Loads Analysis

    Creator:
    Weitzman, Paul M.
    Abstract:
    This work develops the loads, boundary conditions, and model construction techniques used to create a high-level vehicle analysis model. The loads are derived from the overall performance parameters of the vehicle, which include 3 axis accelerations and aerodynamic forces from Computational Fluid Dynamics outputs. The boundary condition of the analysis...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Paul M

  • Turbulent Combustion Analysis of Large Hydrocarbon Fuels in a Reduced Pressure Environment

    Creator:
    Schorn, Nathan E.
    Abstract:
    The aviation industry is pushing for better fuels and gas turbine engines for several reasons: cost, emissions, and to a lesser extent high-altitude relights. One aspect that research has been focused on to help reduce costs, emissions and better understand high-altitude relights is studying the combustion behavior of the fuel...
    Resource Type:
    Masters Thesis
    Full Text:
    consumption speeds in this work ranged from 1 to 3 m/s for four different fuels: jet-A, ATJ Gevo, C10/TMB

  • Temperature Evolution of Spark Kernels in Quiescent and Cross-flow Conditions

    Creator:
    Okhovat, Sebastian
    Abstract:
    Numerous physical and chemical processes are required for successful ignition of a flammable mixture, many of which have been well characterized. However, one aspect of the ignition process that has received limited consideration is understanding the temperature of the spark kernel. A spark kernel is the volume of heated gas...
    Resource Type:
    Masters Thesis
    Full Text:
    velocities (5.8-15.6 m/s). For both quiescent and cross-flow conditions, kernels developed into a toroidal

  • Thermal and Aerodynamic Effects of Surface Roughness Patterns on Additive Manufactured Heat Sinks

    Creator:
    Lundeen, Samuel L.
    Abstract:
    Breakthroughs in heat sink design are now limited by conventional manufacturing techniques which can only produce basic fin shapes with homogenous surface structuring. Additive Manufacturing (AM) is a potential disruptive technology for heat sink design and other convective heat transfer solutions, as surface properties can be directionally varied to maximize...
    Resource Type:
    Masters Thesis
    Full Text:
    by non-heated fluid upstream is increasing as the fluid velocity rises. The velocity, v (m/s), is

  • Optimal High-bandwidth Non-collocated Control of Ball-screw Drives

    Creator:
    Dumanli, Alper
    Abstract:
    This work presents a novel optimal control strategy for precision motion control of flexible ball-screw feed drives. Typically, ball-screw feed drive control relies on state feedback taken both from motor and the load sides. The controller designed in this thesis is based on the non-collocated framework, where all the feedback...
    Resource Type:
    Masters Thesis
    Full Text:
    ( ) ( ) ( )( ) , ( ) ( ) ( ) ( ) ( ) ( ) ( )( ) , ( ) ( ) ( ) ( ) ( ) : 0, , M T Q s DM DT X s m s c b s k X s cs kG s G s U s m m s a s a s a s a U s Q s X s X s m s

  • Design of composite sandwich panels for a Formula SAE monocoque chassis

    Creator:
    Story, Robert D.
    Abstract:
    Physical testing of composite sandwich panels in three point bending is an increasingly important aspect of qualifying a composite monocoque for Formula SAE competition. Required stiffness and strength values have increased over the past three years, and more of the monocoque's laminates must be tested as well. As a result,...
    Resource Type:
    Masters Thesis
    Full Text:
    R e su lt s S e ri a l N u m b e r F a b ri c U n i L a y u p S ch e d u le D e n si

  • An approach to reduced-order modeling and feedback control for wave energy converters

    Creator:
    Shoori J., Hesam E.
    Abstract:
    Wave energy holds great promise to be part of the alternative energy portfolio that will provide independence from fossil fuels. As wave energy converter (WEC) technologies mature, designing effective control strategies to extract maximum energy, extend device life, coordinate WEC operation within an array, or mitigate negative impacts of a...
    Resource Type:
    Masters Thesis
    Full Text:
    ](t) = [CB](t) = ∫ ∞ 0 CeA(t+s)Bu(s)dt = ∫ ∞ 0 m∑ j=1 (zj(t), wj(t))dt. (3.16) In order to