Recent development on fluid-structure interaction control based on surface perturbation

Control of fluid-structure interactions has been extensively investigated in the past. Various techniques have been developed, including passive control techniques such as changing structural geometries, adding grooves, shrouds or near-wake stabilizers to structures and active control techniques such as acoustic excitation, oscillating or rotating structures and surface bleeding. A novel surface perturbation technique has emerged recently, which has been successfully applied to control flow, flow-induced vibration and noise. In this article, we summarize this technique, major applications, control performances, and possible physical mechanisms responsible for flow modification, drag reduction, controlling fluctuating forces/structural vibrations, and noise control.