Flow Control of Extreme Pressure Loads Associated with Flow Separation

Abstract

Active flow control is applied at different locations over a surface-mounted prism to reduce extreme pressure coefficient and loads. Different control strategies including blowing, suction, and synthetic jets are evaluated. The full unsteady Navier–Stokes equations are solved to determine the pressure coefficients. The extent of reduction when using these three strategies with different flux injections, slot locations, and angles is determined. These strategies are assessed in two flow regimes corresponding to different Reynolds numbers. It is found that for the case of R = 103, a reduction of the peak pressure, by nearly 50% is obtained. For the case of R = 104, the best reduction is about 25%.