Performance Analysis of Hypersonic 2D Curved Shock Compression Flow Field

To explore performance potential of hypersonic curved shock compression, high performance curved shock compression design results were obtained through multi-objective optimization and sampling com- putation, and were compared with traditional compression, under both inviscid and viscous condition. The re- sults show that, (1) under inviscid condition, in the Pareto solutions of Multi-objective optimization, there ex- ist curved shock compression cases, which have shorter length, higher compression efficiency and higher mass capture ratio under low flight Mach number, than traditional equal shock strength three ramps compression; (2) under viscous condition, when pressure ratio is 8.29 (1±0.5%), compared with isentropic compression, the length of curved compression is 35% shorter; compared with traditional equal shock strength three ramps com- pression, the length of curved compression is 8% shorter, the total pressure ratio is approximately equal, and the mass capture ratio under flight Mach number of 4 is 6% higher; compared with ramp-isentropic compres- sion, the total pressure ratio of curved compression is 1.1% lower, while the mass capture ratio under flight Math number of 4 is 6% higher; outlet boundary layer thickness and shape factor of eurved shoek compression are lower than those of other compression methods.