Figure 22

Flow control sensitivities for the Ahmed body. Based on a RANS computation, a flow control sensitivity map of drag $F_x$ w.r.t. normal jet velocity $v_n$ was computed for the 35^∘ case of the Ahmed body. The highest sensitivities are expectedly encountered at the rear part. Suction is favourable at the rear separation edge and at the origin of the longitudinal vortices, whereas on the slant surface blowing would reduce the drag by filling the wake.