Search Constraints

Start Over
Filtering by: Creator Upington, Deborah A. Remove constraint Creator: Upington, Deborah A. Advisor Liburdy, James A. Remove constraint Advisor: Liburdy, James A.

Search Results

  • A study of solidification dynamics with liquid mass influx

    Creator:
    Thirunavukarasu, Balamurugesh
    Abstract:
    A computational model is developed to study the effects of alumina layer formation on an ablative surface when exposed to high temperature particle laden gas flow. The solidification dynamics i.e., the solid and liquid alumina layer growth rate, and the heat transferred to the ablative surface are investigated. A one-dimensional...
    Resource Type:
    Masters Thesis
    Full Text:
    of Solidification Dynamics with Liquid Mass Influx James A Liburdy / Deborah V Pence A

  • The effects of pulsing and blowing ratio on a 45° inclined jet in cross flow

    Creator:
    Stander, Arjan
    Abstract:
    The effect of jet flow pulsing and blowing ratio on a jet in cross flow has been investigated. Preliminary jet flow studies were performed without cross flow and an extensive study of jet with cross flow was done for a total of nine test cases. The effect of velocities ratios...
    Resource Type:
    Masters Thesis
    Full Text:
    and Blowing Ratio on a 45° Inclined Jet in Cross Flow. Abstract approved: urdy De orah V. Pence The

  • Simulation of drag reduction due to multi-aligned spheres

    Creator:
    Lindqvist, Varna
    Abstract:
    A method was sought to predict the flight paths and collisions for closely spaced ink droplets of various sizes as a design aid for ink-jet printing development. Computational fluid dynamics models of two rigid aligned spheres, as a proxy for ink droplets, were initiated in atmospheric pressure air at constant...
    Resource Type:
    Masters Thesis
    Full Text:
    . Abstract approved: ____________________________________________________________________ Deborah V

  • The experimental characterization of membrane behavior in two-phase gas extraction

    Creator:
    Cappello, Nicholas C.
    Abstract:
    Understanding the behavior of hydrophobic membranes is important for applications where separating a gas from a liquid-gas mixture is beneficial. For example, in-situ vapor extraction can be used in microscale heat sinks to improve heat transfer and flow stability. In this study, gas is experimentally evaluated flowing through flexible polytetrafluoroethylene...
    Resource Type:
    Masters Thesis
    Full Text:
    Experimental Characterization of Membrane Behavior in Two-phase Gas Extraction Abstract approved: Deborah V

  • Mechanically Enhanced and Optically Compatible Hydrogels for Particle Image Velocimetry in Porous Flow

    Creator:
    Cornwell-Arquitt, Luke
    Abstract:
    Hydrogels have been attractive for use as a medium in porous flow studies, but have always been limited in this role because of their poor mechanical properties. This project analyzes and tests two recently developed hydrogels, poly(methacrylamide-co-methacrylic acid) (PMM), and a heat-treated long chain PVA hydrogel. Particle image velocimetry (PIV)...
    Resource Type:
    Honors College Thesis
    Full Text:
    Particle Image Velocimetry in Porous Flow by Luke Cornwell-Arquitt A THESIS submitted to Oregon

  • Leading Edge Separation Analysis of Oscillating Airfoil Energy Harvesters

    Creator:
    Ngo, Vickie
    Abstract:
    Oscillating foil energy harvesters are analyzed at optimal reduced frequencies (𝑘=𝑓𝑐/𝑈) to determine how the leading edge radius of curvature affects leading edge separation. The understanding of leading edge separation and its behaviors is critical to predicting the transient lift profile of an airfoil. The separation is therefore also critical...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: James A. Liburdy Oscillating foil energy harvesters are analyzed at optimal reduced

  • Effects of a thin, flexible nozzle on droplet formation and impingement

    Creator:
    Hawke, Shane R.
    Abstract:
    The droplet formation process in the vicinity of the nozzle exit and the behavior of a spreading droplet during impingement on a smooth glass surface were studied. Two nozzle geometries were tested. The first case was a stiff stainless steel nozzle plate 0.787 mm thick. The second case was a...
    Resource Type:
    Masters Thesis
    Full Text:
    Engineering presented on December 12, 2006. Title: Effects of a Thin, Flexible Nozzle on Droplet

  • Characterization of flow boiling in a fractal–like branching microchannel network

    Creator:
    Edward, Lee M.
    Abstract:
    Based on experimental investigations the present study evaluates flow instability and void fraction in a fractal-like branching microchannel network with rectangular cross-section. The hydraulic diameter of the channels ranged from 308μm at the inlet to 143μm at the outlet. The flow network used is characterized by set branching ratios for...
    Resource Type:
    Masters Thesis
    Full Text:
    6, 2008. Title: Characterization of Flow Boiling in a Fractal-Like Branching Microchannel Network

  • Investigations into the effects of a vibrating meniscus on the characteristics of drop formation

    Creator:
    Lewis, Kevin T.
    Abstract:
    As drop-on-demand (DOD) applications continue to gain ground in desktop inkjet-printing, 3D printing, fluid mixing, and other areas the demand for higher frequency operations are beginning to push against the current physical boundaries in DOD technology. The current research is exploring the possibility of controlling drop volume and velocity at...
    Resource Type:
    Masters Thesis
    Full Text:
    : Investigations into the Effects of a Vibrating Meniscus on the Characteristics of Drop Formation Abstract

  • Effect of Active Trailing Edge Motion Upon Airfoil Energy Harvester

    Creator:
    Strahl, Jordan D.
    Abstract:
    The application of a flapping foil with prescribed trailing edge motion to energy harvesting in a low reduced frequency (k = fc/U∞) regime was experimentally studied. The effects of the phase and amplitude of the applied trailing edge motion upon time-variant power extraction capability have been measured and are interpreted....
    Resource Type:
    Masters Thesis
    Full Text:
    The application of a flapping foil with prescribed trailing edge motion to energy harvesting in a low