Density corrections for turbulence models

摘要

The present paper deals with the improvement of the predictions of high Mach number boundary layers. Two-equation models have been shown to poorly predict the logarithmic region of the boundary layer in Presence of large density gradients. This induces significant errors in the skin friction coefficient prediction. A correction of the diffusion terms in two-equation models is suggested to account for the density variations And to retrieve the logarithmic law.