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  • An experimental investigation of natural convection heat transfer from vertical flat plates in mercury

    Creator:
    White, Donald Henry
    Abstract:
    Heat transfer from a vertical flat plate in an infinite pool of mercury was investigated. Velocity profiles were measured with a hot-film anemometer and simultaneous temperature profiles measured with thermocouples in this low Prandtl number liquid metal. Constant heat flux plates at Grashof numbers of 9 x 10⁸ and 4...
    Resource Type:
    Dissertation
    Full Text:
    analytical solutions do a poor job of predicting profiles and that natural convection heat transfer rates in

  • Stability analysis on single-phase natural circulation in Argonne Lead Loop Facility

    Creator:
    Tang, Hong
    Abstract:
    Natural convection provides a means for circulating fluids without the use of pumps. This type of system is of great interest for a wide variety of applications, including solar heaters, process industry, and nuclear reactors. Natural convection will play a vital role in the area of passive safety and reliability,...
    Resource Type:
    Masters Thesis
    Full Text:
    by relying on natural convection for heat transport. It is shown that Heavy Liquid Metal Coolants

  • Numerical study of mass transfer enhanced by theromocapillary convection in a 2-D microscale channel

    Creator:
    Kittidacha, Witoon
    Abstract:
    The effect of unsteady thermocapillary convection on the mass transfer rate of a solute between two immiscible liquids within a rectangular microscale channel with differentially heated sidewalls was numerically investigated. A computational fluid dynamic code in Fortran77 was developed using the finite volume method with Marker and Cell (MAC) technique...
    Resource Type:
    Dissertation
    Full Text:
    of Mass Transfer Enhanced by Theromocapillary Convection in a 2-D Microscale Channel. Abstract

  • Natural Convection Heat Transfer and Boundary Layer Transition for Vertical Heated Cylinders

    Creator:
    Goodrich, Sam S.
    Abstract:
    In recent years, the global nuclear industry has placed a greater emphasis on passively safe reactor designs. In particular, much attention and design work has been applied to engineered systems for passive cooling of nuclear fuel, whether it be loaded in a core or stored in spent fuel pools. The...
    Resource Type:
    Dissertation
    Full Text:
    Engineering presented on April 5, 2017. Title: Natural Convection Heat Transfer and Boundary Layer

  • Effects of fluid axial conduction on liquid metal natural circulation and linear stability

    Creator:
    Sabharwall, Piyush
    Abstract:
    The effect of fluid axial thermal conduction on one-dimensional liquid metal natural circulation and its linear stability was performed through non-dimensional analysis, steady-state assessment, and linear perturbation evaluation. The Nyquist criterion and a root search method were employed to find the linear stability boundary of both forward and backward circulations....
    Resource Type:
    Masters Thesis
    Full Text:
    the natural convection loop 5 Heat Exchanger11 I I _______ Unit: m !.IUI iE Heater I '1II1.5

  • Experimental study of subcooled water spray cooling using flow symmetric micro-structured surfaces

    Creator:
    Tulchinsky, Alex M.
    Abstract:
    Spray impingement cooling has been shown to be a leading candidate for future high heat flux cooling applications. In general, spray cooling curves consist of three heat flux regimes; single-phase, two-phase and critical heat flux (CHF). CHF is considered the design limit for almost all two-phase cooling applications, as a...
    Resource Type:
    Masters Thesis
    Full Text:
    7.1.1 Heat Transfer Curves….……………….………...……64 7.1.2 Convection Coefficient….…………….……………….68

  • Modeling convective boiling flow with in-situ local vapor extraction

    Creator:
    Salakij, Saran
    Abstract:
    The pressure drop of convective boiling flow may be reduced by extracting vapor locally since the entire generated vapor does not have to travel through the entire channel length. In this study, the theoretical model was developed to simulate a convective boiling flow through a fractal-like branching microchannel network with...
    Resource Type:
    Masters Thesis
    Full Text:
    classified into two groups: low inlet flow rate-low heat flux and high inlet flow rate-high heat flux. The

  • An internal convective heating technique for diffusion bonding highly parallel microchannel architectures

    Creator:
    Bose, Sumantra
    Abstract:
    Diffusion bonding cycle times can be a large cost factor in the production of metal microchannel devices. The challenge is to significantly minimize this cost by reducing the bonding cycle time through rapid and uniform heating and cooling within the bonding process. Heating rates in diffusion bonding processes are typically...
    Resource Type:
    Masters Thesis
    Full Text:
    within microchannel devices for convective heat transfer during the bonding process. The internal

  • Experimental Investigation of the Transition to Natural Convection in HTGR Applications using the Oregon State SFSETF

    Creator:
    Fishler, Joshua D.
    Abstract:
    High Temperature Gas Reactors (HTGRs) are positioned to disrupt local and global markets via their unique ability to produce carbon-free process heat, high efficiency power generation, and passively safe operational features. However, significant impediments still exist to delay deployment of this particular technology, including a lack of experimental data, verified...
    Resource Type:
    Dissertation
    Full Text:
    convection via scram, as well as communication path to the heat sink/turbine present a threat to core

  • Flat Plate Free Convective Heat Transfer

    Creator:
    Bristol, Benjanmin R.
    Abstract:
    The OSU MASLWR Test facility is a scaled integral systems LOCA and proof-of-concept test facility for the Multi-Application Small Light Water Reactor design concept. A unique feature of this design is to utilize a small high pressure containment vessel to provide the safety containment function for an integral reactor pressure...
    Resource Type:
    Masters Thesis
    Full Text:
    of the work described in this thesis. 8 1.4 Introduction to Free Convection Convective heat