Numerical simulation of ramp induced shock wave/boundary-layer interaction in turbulent flow

Abstract

A computational study has been carried out to analyse the shock wave turbulent boundary layer interaction in a two-dimensional compression ramp fl ow for a free stream Mach number of 2·94. Ramp angles ranging from 8° to 24° are used to produce the full range of possible fl ow fi elds, including fl ows with minor separation, moderate separation, and signifi cant amount of separation. The model has been analysed using 2D numerical simulations based on a commercially available Computational Fluid Dynamics (CFD) Code, Fluent, that employs k-ω Shear Stress Transport (SST) turbulence model. The computed data for surface pressure distribution indicated a good agreement with experiment. Numerical results obtained through the present series of computations indicate an increased extent of separated zone, and thus show increased upstream infl uence when compared to experiment. Total pressure loss has shown to increase downstream of separation location and increase when corner angle increases. Secondary separation has been observed for higher angles.