An evaluation is conducted of the accuracy of the 'Preston tube' surface pitot-pressure skin friction measurement method relative to the already proven laser interferometer skin-friction meter in a swept shock wave/turbulent boundary-layer interaction. The Preston tube was used to estimate the total shear-stress distribution in a fin-generated swept shock-wave/turbulent boundary-layer interaction. The Keener-Hopkins calibration method using the isentropic relation to calculate the Preston-tube Mach number produces the best results.


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    Title :

    Laser interferometer/Preston tube skin-friction comparison in shock/boundary-layer interaction


    Contributors:
    Kim, K.-S. (author) / Lee, Y. (author) / Settles, G. S. (author)

    Published in:

    Publication date :

    1991-06-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English


    Keywords :