Large-Scale Roughness Influence on Turbulent Hypersonic Boundary Layers Approaching Compression Corners

Effect of Dimples on Glancing Shock Wave-Turbulent Boundary Layer Interactions

“…Fig. 5 shows some representative comparisons, in the stream-wise direction, of PSP results with the discrete measurements of pressure tappings located in numbers 13,17,18,20,23 (lower side) 37, 42, 47 (upper side), (Fig. 2 shows the location of the pressure tappings on the side plate).…”

“…Edwards [17], who investigated the influence of a region of roughness upstream of an interaction, found that while the effects of roughness on the boundary layer profile persisted far downstream, the shock/ boundary layer interaction was only marginally affected. In contrast, other studies for example by Disimile and Scaggs [18], Inger [19] and Holden [20] who studied a variety of supersonic and hypersonic flow configurations found that roughness was capable of inducing large scale flow separation in cases where the equivalent smooth wall flow remained attached.…”