高速空气舵横-逆向双射流耦合流动控制及降热特性OA

The multi-scale flow coupling effects induced by Shock Wave/Boundary Layer Interaction(SWBLI)in hy-personic flows significantly exacerbate the challenges of thermal load management for flight vehicles.A transverse-opposing dual-jet active control scheme for air rudder is proposed,and its impact characteristics on SWBLI and aero-thermal environments under complex inflow conditions is revealed.The numerical methods employed are validated against experimental data from open literature,and a grid independence analysis is conducted.Results indicate that the transverse-opposing dual-jet scheme achieves global heat reduction superior to single-jet configurations through spatially coupled configurations.Under the condition of an 11° rudder deflection,positioning the transverse jet further upstream and the opposing jet at a higher elevation constructs a large-scale separation zone that isolates the high-temperature mainstream.Consequently,the peak heat fluxes on the leading edge and the plate are controlled below 3 200 kW·m-2 and 300 kW·m-2,respectively.At an angle of attack of 11°,all dual-jet configurations significantly re-duce the gap heat flux to below 300 kW·m-2.However,the leading-edge heat flux is sensitive to jet positioning;it is crucial to ensure the opposing jet remains within the low-pressure wake of the transverse jet to prevent severe flow re-attachment and a subsequent surge in heat flux.