Three-dimensional thermal boundary layer corrections for circular heat flux gauges mounted in a flat plate with a surface temperature discontinuity

    Authors

    M. Kandula; G. F. Haddad;R. H. Chen

    Comments

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    Abbreviated Journal Title

    Int. J. Heat Mass Transf.

    Keywords

    convective heat flux gauges; surface temperature discontinuity; three-dimensional thermal boundary layers; CALORIMETERS; Thermodynamics; Engineering, Mechanical; Mechanics

    Abstract

    Three-dimensional Navier-Stokes computational fluid dynamics (CFD) analysis has been performed in an effort to determine thermal boundary layer correction factors for circular convective heat flux gauges (such as Schmidt-Boelter and plug type) mounted flush in a flat plate subjected to a stepwise surface temperature discontinuity. Turbulent flow solutions with temperature-dependent properties are obtained for a freestream Reynolds number of 1E6, and freestream Mach numbers of 2 and 4. The effect of gauge diameter and the plate surface temperature have been investigated. The 3D CFD results for the heat flux correction factors are compared to quasi-2D results deduced from constant property integral solutions and also 2D CFD analysis with both constant and variable properties. The role of three-dimensionality and of property variations on the heat flux correction factors has been demonstrated. (c) 2006 Elsevier Ltd. All rights reserved.

    Journal Title

    International Journal of Heat and Mass Transfer

    Volume

    50

    Issue/Number

    3-4

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    713

    Last Page

    722

    WOS Identifier

    WOS:000243776400028

    ISSN

    0017-9310

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