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Filtering by: Alternative title ssim Data report 170 Remove constraint Alternative title ssim: Data report 170 Advisor Liburdy, James A. Remove constraint Advisor: Liburdy, James A. Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering

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  • Constrained thin film desorption through membrane separation

    Creator:
    Thorud, Johnathan D.
    Abstract:
    A constrained thin film desorption scheme has been experimentally tested to determine the desorption rates for water from an aqueous lithium bromide mixture through a confining membrane. Variable conditions include the inlet concentration, pressure differential across the membrane, and channel height. Desorption takes place in a channel created between two...
    Resource Type:
    Masters Thesis
    Full Text:
    kPa were imposed along with two channel heights of 170 jim and 745 jim. All cases were run at an

  • 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:
    , which allows for pressure-volume data to be collected during the expansion of a hot gas. These

  • 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:
    magnification and determination of the dynamic velocity range are presented. The data are analyzed using

  • 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:
    taken with a high-speed camera to describe the formation process at the nozzle. This data was

  • Effect of PZT driving waveform and frequency on meniscus shape and dropon-demand droplet formation parameters

    Creator:
    Yang, Guozhong
    Abstract:
    For piezoelectric stack (PZT) driven droplet generator, the driving waveform and driving frequency effect on liquid filament shape and droplet characteristics have been experimentally studied. The experimental study was based on a PZT driven droplet generator with known geometric design parameters and working fluid properties. A lumped-element-model (LEM) constructed to...
    Resource Type:
    Dissertation
    Full Text:
    acoustic pressure in the droplet generator decays exponentially. Experimental data show that the droplet

  • Vortical Structures in Transition to Turbulence through Randomly Packed Porous Media: Scale, Energy, and Mixing Characteristics

    Creator:
    Mohammadi Ziazi, Reza
    Abstract:
    Vortical structures are the driving mechanism of transition to turbulence in porous media requiring adequately resolved observations along with analysis of the scale and energy of flow within the pores. Of specific interest is to understand the vortex dynamics, energy, and turbulent mixing and transport properties in the scale of...
    Resource Type:
    Dissertation
    Full Text:
    spheres is proposed. The approach for data analysis is based on (1) local and non-local vortex

  • 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:
    flow using a single camera. The gas phase measurements are discussed here, while fluid phase data is

  • Experimental Investigations of the Unsteady Aerodynamics of Oscillating Airfoils Operating in the Energy Harvesting Regime

    Creator:
    Siala, Firas F.
    Abstract:
    The rising global trend to reduce dependence on fossil fuels has provided significant motivation toward the development of alternative energy conversion methods and new technologies to improve their efficiency. Recently, oscillating energy harvesters have shown promise as highly efficient and scalable turbines, which can be implemented in areas where traditional...
    Resource Type:
    Dissertation
    Full Text:
    is proposed for estimating the aerodynamic loadings and power output using flow field data. The

  • 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:
    -physical Fluid Properties . . . . . . . . . . . . . . . . . . . . 63 5 Data Reduction and Analysis 64 5.1

  • A study of adiabatic and diabatic flow boiling in parallel microchannels and fractal-like branching microchannels

    Creator:
    Daniels, Brian J.
    Abstract:
    A one-dimensional numerical model has been developed to study diabatic and adiabatic flow boiling in microchannels. This model accounts for developing flow effects and variable property effects. The model uses correlations for void fraction and two-phase multipliers found in the literature. The model has been used to study the performance...
    Resource Type:
    Dissertation
    Full Text:
    ............................................................................ 68 Data analysis