Suppression separation in conical shock wave/turbulent boundary layer interactions through porous bleed control

The separation control of conical shock wave/boundary layer interaction (CSBLI) has been investigated at Mach number M = 2.05 with Reynolds number of R e τ ≈ 150 . Simulations of both controlled and uncontrolled CSBLI flow have been performed using the RANS equations with Spalart-Allmaras (S-A) turbulence model. According to the comprehensive quantitative comparison with a high-fidelity DNS database, the S-A model accurately enable to reproduce the separation behaviors under the low-Reynolds-number condition. Due to the well arranged porous bleed method, the separation bubble has been effectively suppressed, together with the evolution of conical shock-induced horseshoe vortices. Furthermore, a corrected method for describing porous bleed control performance is developed for the CSBLI flow with spanwise pressure gradient. All data collapse well along with the predicted curve, which means it can be conveniently fitted by a simple quadratic function. This modified model also exhibits well collapse in swept-fin SBLI by porous bleed control, suggesting its potential universality with effect of spanwise pressure gradient.