TurhukiU boimdarv layers over s-shaped surface atlacbed to a verfical side wall were
Experimeufally mvesfigafed. Measurements were performed over the s-shaped surface
At three distinctive regions; the neighborhood of the corner; a distance approximately
equal the thickness of the mixed bomidary layer, and far distance from the side wall.
The effect of attaching the sidewall to the s-shaped surface is striking, as it prevents
the flow along the corner from separation in adverse gradients. The mixed boundary
layer fJow in the corner increases the skin friction coefficient. Beyond the
reattachment of the free boundary layer, at far distance from the corner, the turbulent
structure has become strongly disturbed by the prior separation and hence thickened
the boundary layer