Optimization of the tangential jet blowing on a transonic airfoil for buffet control

Optimization of tangential jet blowing on the upper surface of a supercritical transonic airfoil in the buffet mode was carried out. Two-dimensional Unsteady Reynolds Averaged Navier–Stokes equations were solved to simulate the flow past the airfoil. The Spalart–Almaras turbulence model was used to close the equations. The position of the slot nozzle and the intensity of the jet blowing out of it were varied. The optimal position for blowing with the minimum jet intensity to suppress buffet was determined.