Development of separation in the region where a shock interacts with a turbulent boundary layer perturbed by rarefaction waves

Abstract

The solution of many supersonic gas dynamic problems requires studying how the turbulent boundary layer interacts with various perturbations, such as shocks and expansion waves. The essential feature of such flows, compared to single interactions, is that upstream perturbations can cause downstream relaxation effects in the boundary layer. Under such conditions, relaxation properties of the flow, in particular its separation resistance, can depend on the distance from the perturbation, and also on its type and intensity.