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Filtering by: Creator Cornwell, James A. Remove constraint Creator: Cornwell, James A. Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering Peer Reviewed No Remove constraint Peer Reviewed: No

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  • 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

  • Microscale thermal management utilizing vapor extraction from a fractal-like branching heat sink

    Creator:
    Apreotesi, Mario A.
    Abstract:
    It is hypothesized that increases in pressure drop due to vapor generation during boiling in microchannels can be reduced by extraction of vapor at its point of inception. Ultimately, this local vapor extraction decreases the pressure drop required to drive the flow through a fractal-like branching, microchannel flow network within...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Mario A. Apreotesi for the

  • 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

  • Study of Energy Harvesting Performance of Oscillating Airfoils using a Discrete Vortex Model

    Creator:
    Kamrani Fard, Kiana
    Abstract:
    The energy harvesting performance of oscillating airfoils is studied using a discrete vortex model (DVM) with a leading-edge separation criterion. The airfoil undergoes a combined sinusoidal heaving and pitching motion at reduced frequencies of k = 0.06 − 0.16, with heaving amplitude of h0 = 0.5c, and pitching amplitude of...
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: James A. Liburdy The energy harvesting performance of oscillating airfoils is studied

  • Interactions of a fully modulated inclined jet with a crossflow

    Creator:
    Dano, Bertrand P. E.
    Abstract:
    Jets in crossflow are used in a wide range of engineering applications and have been studied for more than 60 years. The transversal penetration and structure of a jet placed in a crossflow is known to be strongly three-dimensional. It is believed that, by using a pulsed jet inclined in...
    Resource Type:
    Dissertation
    Full Text:
    : Interactions of a Fully Modulated Inclined Jet with a Crgssflow. Abstract approved: James A. Liburdy Jets in

  • 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:
    Master of Science in Mechanical Engineering presented on December 4, 2003. Title: A Numerical Model of

  • Heat transfer during the piston-cylinder expansion of a gas

    Creator:
    Rodrigues, Matthew Jose
    Abstract:
    The expansion of a gas within a piston-cylinder arrangement is studied in order to obtain a better understanding of the heat transfer which occurs during this process. While the situation of heat transfer during the expansion of a gas has received considerable attention, the process is still not very well...
    Resource Type:
    Masters Thesis
    Full Text:
    James A. Liburdy The expansion of a gas within a piston-cylinder arrangement is studied in order

  • Study of creeping, inertial and turbulent flow regimes in porous media using particle image velocimetry

    Creator:
    Patil, Vishal A.
    Abstract:
    Porous media flows are encountered in many natural and man-made systems such as gas adsorption, filtration, heat exchangers, combustion, catalytic reactors and groundwater hydrology. This study experimentally investigates these flows as function of pore Reynolds number, Re[subscript pore]. The pore Reynolds number is based on the porous bed hydraulic diameter,...
    Resource Type:
    Dissertation
    Full Text:
    : _______________________________________________________ James A. Liburdy Porous media flows are encountered in many natural and man-made systems

  • Micro-bubble dynamics in two-phase flow through a micro-channel

    Creator:
    Shepard, Thomas G.
    Abstract:
    An experimental investigation into the behavior of micro-bubbles flowing through a micro-channel has been conducted. Experiments were performed within a rectangular micro-channel with dimensions of 5 cm x 13.2 mm x l30 jim. Bubbles were generated in an electrolyte solution by electrolysis at the lower channel wall near the inlet....
    Resource Type:
    Masters Thesis
    Full Text:
    Dynamics in Two-Phase Flow Through a Micro-channel. Abstract approved: James A. Liburdy An experimental

  • 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:
    approved: _____________________________________________________________________ James A. Liburdy