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  • An experimental study of laminarization induced by acceleration and curvature

    Creator:
    Jackson, R. Brian
    Abstract:
    The Generation IV Very High Temperature Reactor (VHTR) design is being actively studied in various countries for application due to its inherent passive safe design, higher thermal efficiencies, and proposed capability of providing high temperature process heat. The pebble bed core is one of two core designs used in gas...
    Resource Type:
    Dissertation
    Full Text:
    ABSTRACT OF THE DISSERTATION OF R. Brian Jackson for the degree of Doctor of Philosophy in Nuclear

  • Contribution of cold seep barite to the barium geochemical budget of a marginal basin

    Creator:
    McQuay, Erica L.
    Abstract:
    Large barite (BaSO4) structures mark cold seeps in the southern San Clemente Basin. Barium flux to San Clemente sediments is two to three times greater than fluxes measured in surrounding California Borderland basins. Analyses of sediment trap material, water column samples, sediments and pore water indicate that expected bariumbearing mineral...
    Resource Type:
    Masters Thesis
    Full Text:
    that surround the basin (Jackson, 1986) These constraints on water exchange affect oxygen

  • RANS and LES predictions of turbulent scalar transport in dead zones of natural streams

    Creator:
    Drost, Kevin J.
    Abstract:
    Natural stream systems contain a variety of flow geometries which contain flow separation, turbulent shear layers, and recirculation zones. This work focuses on streams with dead zones. Characterized by slower flow and recirculation, dead zones are naturally occurring cutouts in stream banks. These dead zones play an important role in...
    Resource Type:
    Masters Thesis
    Full Text:
    thank the other members of this project, Dr. Roy Haggerty and Tracie Jackson for their professional

  • The Use of Fractal-Like Bifurcating Flow Channels for Biological Targeted Cooling

    Creator:
    Stottlemyre, Wyatt
    Abstract:
    In the wake of climate change, the risk of heat related illnesses has continuously increased over the past several decades. While thermal management solutions have continued to improve, there is a need for efficient cooling systems that conform with the human body. This study combines the solutions from fractal-like flow...
    Resource Type:
    Honors College Thesis
    Full Text:
    _____________________________________________________________________ James Liburdy, Committee Member, representing Mechanical Engineering

  • Spatio – temporal temperature variations during droplet impingement evaporation : effects of nanofluid and nano-structured surface

    Creator:
    Graber, Christof
    Abstract:
    Droplet and spray impingement cooling are typically used in high heat flux thermal management. In this thesis, droplet impingement and evaporation heat transfer characteristics are determined from measured spatially- and temporally- varying fluid and surface temperatures. Unique to this study is the documentation of the effects of using a nanofluid...
    Resource Type:
    Masters Thesis
    Full Text:
    Narayanan, and Dr. James Liburdy for their continual support and assistance in completing this research. A

  • 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

  • A multiscale modeling approach for bubble-vortex interactions in hydro-propulsion systems

    Creator:
    Finn, Justin Richard
    Abstract:
    Multiphase flow dynamics are important in many naval and turbomachinery applications, where bubble interaction with low pressure, vortical structures can lead to undesirable cavitation effects. To better understand the underlying phenomena, a multiscale numerical framework is developed to simulate bubble laden flow in dynamic hydro propulsion systems. Several subproblems in...
    Resource Type:
    Masters Thesis

  • On the Euler-Lagrange Modeling of Particle-laden Turbulent Flows

    Creator:
    Pakseresht, Pedram
    Abstract:
    Particle-laden turbulent flows, wherein a large number of small size particles are dispersed in a fluid, are widely encountered in environmental and industrial applications. Understanding their underlying physics, making predictions without performing expensive experiments, and ultimately optimizing the systems carrying such flows, require accurate and robust modelling tools. The Euler-Lagrange...
    Resource Type:
    Dissertation
    Full Text:
    . Sincere thanks must also go to the members of the committee: Profs. James Liburdy, Deborah Pence, Daniel

  • Modeling Methods for Hydraulic Fracturing Wastewater Treatment Applications

    Creator:
    O'Hern, Hannah
    Abstract:
    Modeling of hydraulic fracturing wastewater treatment systems must be very accurate so it can be used for real-time modeling and control of the process. The treatment of hydraulic fracturing wastewater is complex because of the variability of the composition of hydraulic fracturing wastewater. In this work, literature review of hydraulic...
    Resource Type:
    Dissertation
    Full Text:
    experimental design and setup. • James Liburdy: Significant contributions to the theory of the problem and

  • Numerical simulation of cavitating bubble-laden turbulent flows

    Creator:
    Shams Sobhani, Ehsan
    Abstract:
    Many engineering devices and propulsion systems suffer from undesirable effects of cavitation; such as degradation in the efficiency of pumps and turbines, generation of noise and vibration on ship propeller, increased drag and erosion of propeller blade, etc. In spite of decades of research on this problem, detailed study of...
    Resource Type:
    Dissertation
    Full Text:
    for the given encouragements. I would also like to thank my committee members Prof. James Liburdy, Dr