Theoretical study of near-wall flow control schemes employing interceptors (Q2767645)

The paper develops a technique for flow control near bodies supplied by special plates, interceptors, which be mounted on the body surface. The topological analysis of the flow patterns was carried out by numerical methods in order to obtain the flow regimes when the interceptor is able to generate a large-scale stable vortex near the surface. It includes determination of the critical points of flow field and their type at various flow conditions. Numerical simulation of separated flows behind the interceptors is carried out by the discrete vortex method. Parameters of the vortex, coordinates, circulation and eigenfrequency are obtained against the angle of inclination. The suction of fluid from the separation zone is proposed for strengthening of vortex stability. This flow modification is shown to lead to change of critical point type. The intensity of the suction was evaluated for different flow conditions, when one, two or a set of interceptors were disposed on the surface.