Computational Investigation of Turbulent Shock Wave Boundary Layer Interaction via Secondary Recirculation Induced Wall Jet

Abstract

Shock wave boundary layer interaction (SWBLI) and its control have been major areas of research in high-speed viscous flows, mainly due to the formation of boundary layer separation, local excessive heat flux and oscillations that lead to performance reduction, fatigue, and other detrimental effects. Many active and passive control methods have been studied to suppress these effects, including secondary recirculation jets where a self-induced jet stream is generated via suction at interaction zone and injection of drained fluid back to main flow by means of pressure differences. This study investigates performance of a geometrically modified novel recirculation jet system where a jet stream is injected at the channel bottom, parallel to the flow. Two- dimensional (2D) numerical investigation using Reynolds Averaged Navier-Stokes (RANS) k-. SST turbulence model is conducted to evaluate the effectiveness of novel recirculation wall jet. Preliminary studies show that the presence of a wall jet shows remarkable reduction both in area of separation zone and Stanton number.