Separation shock dynamics in Mach 5 turbulent interactions induced by cylinders

Abstract

Wall pressure fluctuations have been measured under the unsteady separation shock in interactions generated by unswept circular cylinders. Models were tested in the turbulent boundary layers on the tunnel floor and on a full-span flat plate. The freestream unit Reynolds number was 53×10 6 m -1 , and the wall temperature approximately adiabatic. Distributions of the shock frequency, shock period, and shock speeds in the upstream and downstream directions have been calculated