Numerical investigation of interaction between asymmetric crossing shock waves/turbulence boundary layer

The flow field of crossing shock waves/turbulence boundary layer caused by 7°×11° double sharp fins was computed with Navier-Stokes equations and five turbulence models.The main focus was the resolution of wall pressure,heat transfer,adiabatic wall temperature and skin friction lines.The results demonstrate that: the region after the intersection of two oblique shock waves has a high pressure and heat transfer.As compared with the experiment,the computed surface pressure and skin friction lines are very good,the adiabatic wall temperature is moderate,and the heat transfer is poor because its peak is three times of experiment counterpart.Turbulence model has little effect on wall pressure and skin friction lines,whereas it has big effect on adiabatic wall temperature and heat transfer.TNT(turbulent/non-turbulent) and SST(shear-stress transport) models behave relatively well among these five turbulence models.