MODIFIED DIFFUSION MODEL OF PSEUDO-SHOCK WAVES CONSIDERING UPSTREAM BOUNDARY LAYERS.

Abstract

Experiments performed to investigate the effects of the upstream boundary layer on the pseudo-shock waves, by varying the Mach number and boundary layer thickness upstream of the pseudo-shock are presented. Based on the results and modifying the diffusion model, a new flow model of the pseudo-shock is presented in which both effects of the upstream boundary layer and the wall friction are taken into account. Calculated values by this modified diffusion model agree better with the experimental values than the previous flow models.