The amplification of transverse Reynolds stresses in shock–turbulence interactions is studied at a wide range of Mach and Reynolds numbers using well-resolved direct numerical simulations. Data show that the Reynolds stresses change significantly across the shock with a clear dependence on characteristics of the turbulence upstream of the shock, an effect not captured by classical theories. Budget analysis shows that pressure–dilatation and dissipation dominate the transport of the transverse stresses, which are further analyzed in the context of linear analysis. Data suggest that amplification factors for transverse stresses follow K -scaling in both wrinkled and broken regimes. Unlike the amplification of streamwise stresses, no transition is observed to a regime where transverse stresses depend solely on the mean Mach number, at least for the conditions studied here. Possible explanations are discussed.


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    Title :

    Amplification of Transverse Reynolds Stresses in Shock–Turbulence Interactions


    Contributors:

    Published in:

    AIAA Journal ; 60 , 11 ; 6235-6239


    Publication date :

    2022-11-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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