Abstract
Two-component laser Doppler velocimetry (LDV) measurements were made in a planar, shock-separated free shear layer formed by the convergence of two supersonic streams past a thick plate. High-speed wall pressure measurements locate the unsteady shock wave formed by this interaction and, consequently, allow separation of the effects of shock motion from the turbulence fluctuations in the velocity measurements of the shear layer. Shock-induced separation dramatically increases the normal stresses and shear stress. The shock-separated shear layer displays a positive shear stress region between separation and reattachment. Reattachment produces a shift in turbulent kinetic energy from the streamwise component to the transverse component. The region of shock motion has a relatively constant width irrespective of distance from the wall.
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