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Filtering by: Creator Duyck, Kyle M. Remove constraint Creator: Duyck, Kyle M. Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering

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  • Flow boiling of lithium bromide-water solution in microchannels, with application to desorption

    Creator:
    Fackrell, Kurt
    Abstract:
    Recent studies of flow boiling within microchannels have shown high heat fluxes, leading to successful design and testing of compact heat exchangers, cooling systems for electronics and other high efficiency, miniature components. An experimental study of flow boiling of a concentrated salt solution in microchannels is presented. Experiments examined flow...
    Resource Type:
    Masters Thesis
    Full Text:
    , Ms. Kathryn Norlin, Mr. Matthew Beck, Ms. Kira Ellsaesser and Mr. Jason Kyle for aid in

  • Void fraction variations in a fractal-like branching channel network

    Creator:
    Cullion, Rebecca
    Abstract:
    Two-phase flow in a fractal-like branching microchannel heat sink may have enhanced heat transfer capabilities over single phase flow in the same branching channel network. In order to exploit this potential, a complete understanding of flow boiling in this geometry is required. The fractal-like geometry is similar to that of...
    Resource Type:
    Dissertation
    Full Text:
    = 66 W, m = 45 g/min, and Ti = 88°C, included single phase, bubbly, and slug flow. Quantitative

  • Model predictive control for sagittal plane locomotion

    Creator:
    Maunder, Cary R.
    Abstract:
    A distinct characteristic of legged locomotion is its periodic nature. This periodic motion, in the form of a periodic orbit, has been the target of many walking and running control strategies. The spring loaded inverted pendulum (SLIP) has become a popular model of sagittal plane locomotion, exhibiting behavior characteristic of...
    Resource Type:
    Masters Thesis
    Full Text:
    Predictive Control For Sagittal Plane Locomotion. Abstract approved: John M. Schmitt

  • Optimal soaring by a small autonomous glider

    Creator:
    Kyle, Jason A.
    Abstract:
    Extending the flight time of an autonomous unmanned air vehicle by soaring is considered. A suboptimal controller is developed and successful static soaring is demonstrated with a 6 degree of freedom glider model. Altitude gain rates of between ¼ and ½ m/s are achieved with this simple implementation. A hybrid...
    Resource Type:
    Dissertation
    Full Text:
    ABSTRACT OF THE DISSERTATION OF Jason A. Kyle for the degree of Doctor of Philosophy in Mechanical

  • Numerical study of droplet formation with nozzle dynamics and multiple droplet impingement

    Creator:
    Sangplung, Saangrut
    Abstract:
    Droplet formation from a flexible nozzle plate driven by a prescribed-waveform excitation of a piezoelectric is numerically investigated using a computational fluid dynamics (CFD) model with the VOF method. The droplet generator with a flexible nozzle plate, which is free to vibrate due to the pressure acting on the plate,...
    Resource Type:
    Dissertation
    Full Text:
    , wife and son, Kyle, for their encouragement and support during this study. TABLE OF

  • Describing Tsunami Inundation and Debris Motion using Optical Measurement Methods in a Large-Scale Wave Basin

    Creator:
    Rueben, Matthew Robert
    Abstract:
    This thesis consists of two papers in manuscript format. The first paper presents optical measurements of tsunami inundation through an urban waterfront in a laboratory wave basin. The physical model was constructed at 1:50 scale and was an idealization of the town of Seaside, Oregon. The paper presents an analysis...
    Resource Type:
    Honors College Thesis
    Full Text:
    X = 31.89 m, Y = 0.54 m for ERF=7s wave …………………………..…………………………………………. 66 Figure 7: Four steps of

  • Chemometrics-based Approach for Predicting Low Temperature Combustion Engine Fuel Performance

    Creator:
    Daly, Shane
    Abstract:
    Low temperature combustion (LTC) engines offer improved efficiency and reduced emissions over traditional gasoline spark-ignited and diesel compression-ignition engines. The ability to produce fuels optimized for LTC engines could help increase efficiency and therefore improve fuel economy, insomuch that Federal fuel economy standards could be met. Currently, a fuel performance...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Christopher L. Hagen Kyle E

  • 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

  • Radiation Emissions from Turbulent Diffusion Flames Burning Large Hydrocarbon Fuels

    Creator:
    Zeuthen, Eric D.
    Abstract:
    The purpose of this study is to measure and compare radiation emissions from flames burning large hydrocarbon fuels to assist in understanding how the molecular composition changes radiation emissions. Radiative heat transfer is significant because it is a primary mode of heat transfer for many combustion devices. This study also...
    Resource Type:
    Masters Thesis
    Full Text:
    4.37±0.02 μm (CO2) filter. ....................................... 36 Figure 12: Time-averaged

  • Effects of Dilution on Turbulent Consumption Speeds of Jet Fuel

    Creator:
    Walters, Ian
    Abstract:
    Combustion systems for transportation applications typically use large hydrocarbon fuels in turbulent premixed or partially premixed environments. Combustion products can enter the reaction region through natural recirculation or combustion control mechanisms. The objective of this study is to characterize how dilution by combustion products affects the turbulent consumption speed for...
    Resource Type:
    Honors College Thesis
    Full Text:
    Engineering Kyle Niemeyer, Committee Member, representing Mechanical Engineering Nancy

  • Floating Offshore Wind Array Systems Optimization off the US West Coast using an Extended Pattern Search Algorithm

    Creator:
    Forinash, Caitlin P.
    Abstract:
    The large wind resource off the United States West Coast has the potential to generate wind power for millions of homes, yet the high cost of energy for offshore wind power compared to traditional sources has slowed the development of offshore wind farms in the US. The four studies presented...
    Resource Type:
    Masters Thesis
    Full Text:
    NNMREC and giving me the opportunity to explore the realm of marine renewable energy. To Kyle

  • Stability and Liftoff of Non-premixed Large Hydrocarbon Flames in MILD Conditions

    Creator:
    Walters, Eric M.
    Abstract:
    The Moderate or Intense Low-oxygen Dilution (MILD) combustion regime has received interest from the industrial furnace and gas turbine engine industries due to attractive properties of reduced NO[subscript x] emissions and high thermal efficiency. MILD combustion is characterized by low oxygen concentrations (i.e. 3%-9% by volume) and high reactant temperatures....
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Eric M. Walters for the

  • Innovative Rear Wing Design Research for Formula SAE

    Creator:
    Lukacovic, Kyle S.
    Abstract:
    The goal of this project is to research an innovative rear wing design for Formula SAE and determine if the concept could be beneficial for automotive racing purposes. The research consists of three steps. First, sensitivity analyses using computational fluid dynamics (CFD) simulation were performed on multiple configurations. Next an...
    Resource Type:
    Honors College Thesis
    Full Text:
    SAE by Kyle Sean Lukacovic A THESIS submitted to

  • The Global Consumption Speeds of Premixed Large-Hydrocarbon Fuel/Air Turbulent Bunsen Flames

    Creator:
    Fillo, Aaron Jesse
    Abstract:
    Large-hydrocarbon fuels are used for ground and air transportation because of their high energy-density and will be for the foreseeable future. However, combustion of large-hydrocarbon fuels in a turbulent environment is poorly understood and difficult to predict. The turbulent flame speed, which is the velocity at which a flame front...
    Resource Type:
    Masters Thesis
    Full Text:
    . Joshua Gess, Kyle Niemeyer, and Bryony DuPont, thank you for pointing out that even if this thesis is

  • GPU-Based Fluid-Structure Interaction using Immersed Boundary Methods

    Creator:
    Minar, Christopher
    Abstract:
    Engineering applications often require fast, accurate solutions of fluid flow around freely moving bodies. The massive parallelism enabled by graphics processing unit (GPU) architecture enables high performance, offering a promising alternative to traditional solver acceleration via multicore central processing units (CPU). However, fully harnessing GPU parallelism requires specialized algorithms and...
    Resource Type:
    Masters Thesis
    Full Text:
    Fluid-Structure Interaction using Immersed Boundary Methods Abstract approved: Kyle Niemeyer

  • Computational Investigation on the Effects of Arc Location in Vacuum Arc Remelting

    Creator:
    Soler, Miguel
    Abstract:
    Vacuum arc remelting (VAR) is a secondary melting process for exotic alloys. The main purpose of this process is to increase the input ingot’s physical and chemical homogeneity. This is accomplished through the application of a high current that melts the material through the emergence of electrical arcs that induce...
    Resource Type:
    Masters Thesis
    Full Text:
    : Computational Investigation on the Effects of Arc Location in Vacuum Arc Remelting Abstract approved: Kyle E

  • The energy extraction performance of an oscillating rigid and flexible foil

    Creator:
    Totpal, Alexander D.
    Abstract:
    The aerodynamic performance of an oscillating pitching and plunging foil operating in the energy harvesting mode is investigated. Experiments are conducted in a closed-loop recirculating wind tunnel at Reynolds numbers of 24,000 to 48,000, and reduced frequencies (k = fc/u) of 0.042 to 0.083. Foil kinematics are varied through the...
    Resource Type:
    Masters Thesis
    Full Text:
    have even completed my first term as a graduate student! I also want to thank Kyle Zada for

  • Experimental investigation of supercritical heat transfer of carbon dioxide in parallel square microchannels with a single-wall constant heat flux boundary condition

    Creator:
    Zada, Kyle R.
    Abstract:
    In the vicinity of the pseudocritical point, supercritical carbon dioxide (sCO₂) undergoes a steep change in properties from “liquid-like” to “gas-like” as it is heated at a constant pressure. At the same time, there is a large spike in specific heat which can yield high heat transfer coefficients and heat...
    Resource Type:
    Masters Thesis
    Full Text:
    THE THESIS OF Kyle R. Zada for the degree of Master of Science in Mechanical Engineering presented

  • Evaluation of the predictive capability of two-phase flow maps for microchannel condensation of R-134a at low mass flux conditions

    Creator:
    VanderPutten, Michael A.
    Abstract:
    Predicting condensation flow regimes and the associated heat transfer and pressure drop in microchannels is critical for designing terrestrial and space systems for heating, cooling, power generation, and advanced manufacturing. It is well established that in flows approaching the microscale (Dh < 1 mm) gravity-dominated flow regimes become less relevant,...
    Resource Type:
    Masters Thesis
    Full Text:
    : ________________________________________________________________ Brian M. Fronk Predicting condensation flow regimes and the associated heat transfer

  • Numbering-up of parallel microchannel arrays to megawatt scale supercritical CO₂ solar thermal receivers

    Creator:
    Hyder, Matthew B.
    Abstract:
    Concentrated solar power (CSP) plants have the potential to reduce the reliance on nonrenewable energies such as coal and natural gas and provide 24 hour, renewable electricity. A CSP system consists of a large field of heliostats that concentrate the sunlight on a centralized receiver, in this receiver a working...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ Brian M. Fronk Concentrated solar power (CSP) plants have the potential to reduce the