Numerical Investigation of Supersonic Injection Using a Reynolds-Stress Turbulence Model
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The full, three-dimensional Favre-averaged Navier-Stokes equations, coupled with the second-order Zhang et al. Reynolds-stress turbulence and K- models, were used to numerically simulate a 25-deg, Math 1.8 injection into a Math 3.0 crossflow. Detailed comparisons with experimental data were performed. Analysis of the Reynolds-stress turbulence model simulation results revealed physically consistent and accurate predictions for mean flow and turbulent quantities, whereas the simulations with the K- model resulted in nonphysical and inconsistent turbulence predictions. Analysis of the three-dimensional flowfield simulation with the Reynolds-stress turbulence model shows that the shock structure downstream of the oblique barrel shock was a mirrored image of the leeward side of the oblique barrel shock. Furthermore, the downstream location where vortical motion was initiated in the jet plume was caused by the recompression shock-induced vortices. These vortices were generated through the combined effects of the inflow air upwash behind the plume and the mirrored oblique barrel shock.