Wall-modelled and wall-resolved Large-Eddy Simulations of shock-wave/boundary layer interaction

Wall-modelled large-eddy simulations of shock-wave/boundary-layer interaction are compared to wall-resolved LES references to assess the quality of turbulence modelling in terms of physical reliability in a non-equilibrium separated flow arrangement. A novel approach to wall-modelled LES is applied. The latter consists of augmenting the turbulent flow properties at the wall location to enforce the correct wall shear stress and heat flux, preserving, at the same time, the no-slip conditions for the velocity and the isothermal/adiabatic conditions for the temperature fields. Combined with proper resolution detectors, the method, already tested and validated in channel flows and boundary layer configurations [1], falls back to wall-resolved LES where the resolution permits. The strategy is here improved and discussed in the case of separating flows under strong compressible conditions, such as shock/boundary layer problems showing good agreement with reference wall-resolved LES.