A blended drag coefficient model is constructed using a series of empirical relations based on Reynolds number, Mach and Knudsen number. When validated against experiments, the produces matching values with standard deviation error 2.84% maximum 11.87%. The used in Lagrangian code which coupled to hypersonic aerothermodynamic CFD code, particle velocity trajectory are experimental results. comp...

An entirely new approach to the large-eddy simulation (LES) of high-speed compressible turbulent flows is presented. Subgrid scale stress models are proposed that are dimensionless functions of the computational mesh size times a Reynolds stress model. This allows a DNS to go continuously to an LES and then a Reynolds-averaged Navier-Stokes (RANS) computation as the mesh becomes successively mo...