Abstract
Two-dimensional unsteady Reynolds Averaged Navier-Stokes (2D-URANS) simulation of spatially developing turbulent boundary layer at high Reynolds numbers with a uniform blowing (UB) was carried out aiming at skin friction drag reduction. The friction Reynolds number was set to be 160, 2000, 6000. The mean velocity profiles are shifted from the wall. As a result, the skin friction drag was reduced by UB. It is found that the drag reduction rate is roughly scaled by the blowing velocity expressed in the wall unit.
