抄録
Flowfields with impinging shock wave and turbulent transition are studied numerically by compressible large-eddy simulation, and results were compared with experimental data. The analysis for shock-flat plate boundary layer interaction showed that the present LES code gives reasonable results for such flowfields provided that the grid is fine enough to resolve coherent structures at the transitional region. Both surface pressure and boundary layer profiles for the transitional transonic cascade were predicted correctly with LES. Numerical simulation based on conventional Reynolds-averaged Navier-Stokes also gives agreeable pressure distribution only when the transition point is artificially specified at appropriate location, but it tends to predict thinner boundary layer thickness.
