Design exploration on the shock wave/turbulence boundary layer control induced by the secondary recirculation jet

Abstract

The separation bubble caused by the shock wave/boundary layer interaction (SWBLI) has adverse influence on the field performance, and the passive control approach should be employed to reduce the adverse impact. In the current study, the implicit Reynolds Averaged Navier-Stokes (RANS) equations coupled with the two-equation shear stress transport (SST) k-ω turbulence model have been used to simulate the SWBLI flow control induced by the secondary recirculation jet numerically. Different configurations of the secondary recirculation injection system are put into consideration, so as to the optimization work for the design variables. The obtained results show that the control effect of the secondary recirculation injection system is pretty good to decrease the area of the separation bubble and the average value of the wall heat flux. At the same time, the flow mechanism of the control cases is captured as well. The results of variance analysis and Duncan multiple range test provide the relationship between the design variables and the objective functions. The multi-objective design optimization result shows great agreement with the numerical result, and it can balance the control effect.