Turbulent Inflow Conditions for Large-Eddy-Simulation of Compressible Wall-Bounded Flows

Abstract

The issue of turbulent inflow conditions for large-eddy simulation (LES) is addressed through three representative examples recently treated at ONERA. First, the performance of an extension to compressible flows of the rescaling method of Lund et al. is assessed. The second example, the flow above a deep cavity shows that the imposition of turbulent fluctuations has nearly no influence on the accuracy of the simulation on this acoustically driven flow. The third case demonstrates that particular attention must he paid to the response of the inflow condition to acoustic perturbations when local hybrid Reynolds-averaged Navier-Stokes/LES approaches are considered