Numerical simulation of a three-dimensional flow in a channel with interaction of a plane shock wave and a longitudinally ribbed surface

Results of numerical simulations of a supersonic flow in a channel with a rectangular cross section having a longitudinally ribbed bottom surface are reported. The channel contains a tapered inlet section, where the cowl lip generates a shock wave incident onto the bottom surface, and a posterior constant-area section. The present numerical simulations are performed for a viscous three-dimensional flow with the use of the Reynolds-averaged Navier-Stokes equations and k-omega SST turbulence model. The computations are performed for the free-stream Mach number M = 4.