Turbulence characteristics of a boundary layer over a swept bump

摘要: The evolution of the turbulent boundary layer over a bump defined by three tangential circular arcs and swept at 45" was examined. flat-plate approaching had momentum thickness Reynolds number approximately 3800. ratios upstream boundary-layer to height convex radius curvature were 1.5 0.06, respectively. influenced alternating signs streamwise pressure gradient, wall curvature, mean crossflow, which resulted in complex flow that grew rapidly on downstream side bump. profiles deviated significantly from typical logarithmic behaviour, but remained attached. stress components explained growth two internal layers triggered discontinuities near leading trailing edges shear vector found lag velocity gradient vector, despite spanwise changing direction above measurements compared previous results two-dimensional with same profile shape number. Contrary studies, addition crossflow this field did not reduce vertical mixing relative kinetic energy.