Surface pressure distributions on a body in high-speed flow can be drastically altered if gas is injected at the body surface, through the distortion of the flowfield as well as through the momentum flux at the surface. One case of blowing from a strip on a flat plate was studied by Smith and Stewartson. In this case the supersonic laminar boundary layer separates somewhat ahead of the blowing region and moves away from the surface as a free shear layer at nearly constant pressure. In the present work the analysis of Smith and Stewartson is extended to flow past a wedge at a high Mach number. A description of separation from a cooled wall similar to that of Brown at al. is given in terms of the physical coordinate rather than the Dorodnitsyn-Howarth variable. A complete asymptotic flow description leads to a simpler expression for a constant in the pressure-displacement relation. This part of the present derivation closely resembles that of Kerimbekov at al. The formulation for the blowing region is applied to some specific examples, including a case with blowing through two strips. Some representative pressure distributions are shown.


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    Title :

    Strip blowing from a wedge at hypersonic speeds


    Additional title:

    Linienförmiges Ausblasen aus einem Keil bei Hyperschallgeschwindigkeiten


    Contributors:

    Published in:

    AIAA Journal ; 33 , 5 ; 843-850


    Publication date :

    1995


    Size :

    8 Seiten, 9 Bilder, 13 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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