TWO-WAY MOMENTUM AND THERMAL COUPLING MECHANISMS IN PARTICLE-LADEN SHOCK WAVE/TURBULENT BOUNDARY LAYER INTERACTION

Direct numerical simulations (DNS) are conducted for particle-laden oblique shock wave/turbulent boundary layer interactions incorporating two-way momentum and heat coupling, to analyze the impacts of thermally non-equilibrium particles on fluid velocity, temperature turbulence statistics and the temperature fluctuation transport. Results indicate that finite thermal inertia cold particles absorb heat from the flow, decreasing mean fluid temperature and suppressing full temperature fluctuations in boundary layer. Hot particles release heat to elevate fluid temperature and broaden the thermal boundary layer, and heat release strengthens with growing particle thermal inertia. Particle heat feedback adjusts only the intensity of turbulent energy transport without changing its spatial pattern. Additionally, particle thermal inertia modulates both the magnitude and dominant contributing terms of wall heat flux.