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    Heat transfer and flow characteristics of fluid jets impinging on a surface with cavities

    Access Status
    Fulltext not available
    Authors
    King, Andrew
    Chandratilleke, Tilak
    Narayanaswamy, Ramesh
    Date
    2010
    Type
    Journal Article
    
    Metadata
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    Citation
    King, Andrew and Chandratilleke, Tilak T. and Narayanaswamy, R. 2010. Heat transfer and flow characteristics of fluid jets impinging on a surface with cavities. Journal of Enhanced Heat Transfer. 17 (3): pp. 223-229.
    Source Title
    Journal of Enhanced Heat Transfer
    DOI
    10.1615/JEnhHeatTransf.v17.i3.20
    ISSN
    1065-5131
    School
    Department of Mechanical Engineering
    URI
    http://hdl.handle.net/20.500.11937/47494
    Collection
    • Curtin Research Publications
    Abstract

    This paper examines the thermal enhancement potential of a novel technique for cooling a heated surface by fluid jet impingement. Instead of using a conventional flat impinging surface, the fluid jet is directed into a coaxial cylindrical cavity embedded in the heated surface. A numerical study is performed to obtain the heat and fluid flow characteristics and to examine the parametric influence arising from the modified surface geometry. Comparisons are made with the thermal performance of conventional fluid jet impingement at a smooth heated surface. The results indicate a several-fold increase in heat transfer due to the presence of a cavity beneath the jet. It is noted that the degree of enhancement is primarily dependent on the cavity depth and jet Reynolds number.

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