THE EFFECT OF CONJUGATE HEAT TRANSFER ON FILM COOLING EFFECTIVENESS

    Authors

    M. Silieti; E. Divo;A. J. Kassab

    Comments

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    Abstract

    The film cooling effectiveness of a two-dimensional gas turbine endwall is compared for the cases of conjugate heat transfer and an adiabatic wall condition using five common turbulence models. The turbulence models employed in this study are: the RNG k-epsilon model, the realizable k-epsilon model, the standard k-omega model, the SST k-omega model, and the RSM model. The computed flow field and surface temperature profiles along with the film effectiveness for one and two cooling slots at different injection angles are presented. The results show the strong effect of conjugate heat transfer on the film effectiveness compared to the adiabatic case and also compared to the effectiveness values obtained from analytically solvable models.

    Journal Title

    Numerical Heat Transfer Part B-Fundamentals

    Volume

    56

    Issue/Number

    5

    Publication Date

    1-1-2009

    Document Type

    Article

    First Page

    335

    Last Page

    350

    WOS Identifier

    WOS:000274198300001

    ISSN

    1040-7790

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