Question

Consider two supersonic flow cases. In the first case the flow is deflected into itself 30? and then expanded 30? so that the final flow is in the same direction as the original flow. In the second case, the expansion happens first, followed by the compression, and again both angles are 30?. In both cases, the upstream Mach number is M1 = 3.2 with p1 = 50 kPa and T1 = 273 K. For each case, make a sketch showing the three Mach numbers, pressures, and temperatures that occurs as the flow goes through the shock and the expansion (or vice versa). The end conditions in the two cases are much different–explain why.

Answer 1