A NUMERICAL STUDY FOR SMALL AMPLITUDE T_S WAVES IN A SUPERSONIC BOUNDARY LAYER

摘要

The propagation of the disturbance waves in a boundary layer at Mach number= 4 5 is studied by direct numerical simulation (DNS), using NND scheme, and different amplitudes A=0 01, 0 001, 0 000 1 of the disturbance have been assumed. The numerical result shows that there might be shocklets induced in the boundary layer, even when the amplitude of disturbance wave is still small.