Diamond and ramp forced-transition trips with different heights were designed for a hypersonic inlet. On the condition of freestream Mach number 6 and the angle of attack 1 degree

the effects of forced-transition on wall heat flux distribution

pressure

total pressure and Mach number of isolator inlet were investigated by both wind-tunnel experiment and three-dimensional numerical simulation. The computational data agreed well with wind-tunnel experiment results in wall pressure

inlet total pressure and Mach number. And there was at most 35% difference in wall heat flux between simulation and experiment results. The results show that both the diamond and ramp forced-transition trips can promote forced-transition effectively. The transition location moves forward with the increasing height of the trips. For the started inlet

the forced-transition trips have little effect on the static pressure of the inlet bottom surface

but the total pressure and Mach number near the bottom surface of the isolator will decline; in such case

the mass-averaged total pressure and the mass flow rate in the isolator decline about 3.5%. The decline of the mass-averaged Mach number is only about 1%.