It is shown that to satisfy the general accepted compressible law of the wall derived from the Van Driest transformation, turbulence modeling coefficients must actually be functions of density gradients. The transformed velocity profiles obtained by using standard turbulence model constants have too small a value of the effective von Karman constant kappa in the log-law region (inner layer). Thus, if the model is otherwise accurate, the wake component is overpredicted and the predicted skin friction is lower than the expected value.


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    Title :

    Turbulence models for compressible boundary layers


    Contributors:

    Published in:

    Publication date :

    1994-04-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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