Direct Numerical Simulations of Supersonic Boundary Layer Receptivity to Acoustic Disturbances

摘要: PREDICTION of laminar-turbulent transition is important for aerothermal design and drag calculations of highspeed vehicles1. This motivates extensive experimental, theoretical and numerical studies of transition at supersonic speeds. Progress made in transition prediction methodology is reviewed in Refs. 2, 3. There are at least two routes to turbulence occurrence. 3 The fist route, which occurs in “quiet” free streams on aerodynamically smooth surfaces, involves receptivity, linear phase and nonlinear breakdown to turbulence …