摘要：

A pair of oblique waves at low amplitudes is introduced in a supersonic flat-plate bound-ary layer. Their downstream development and the concomitant process of laminar to turbulent transition is then investigated numerically using Direct Numerical Simulations (DNS) and Parabolized Stability Equations (PSE). Thisis the last part of an ex-tensive study of the complete transition process initiated by oblique breakdown at Mach 3. In contrast to the previous simulations, the symmetry condition in the spanwise direc-tion is removed for the simulation presented in thisBy removing the symmetry condition, we are able to confirm that the flow is indeed symmetric over the entire compu-tational domain. Asymmetric modes grow in the streamwise direction but reach only small amplitude values at the outflow. Furthermore, thisdiscusses new time-averaged data from our previous simulation CASE 3 and compares PSE data obtained from NASA's LASTRAC code to DNS results.

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