Coupled analysis for active control and energy harvesting from flow-induced vibration

Abstract

The aerospace community has long studied active flutter control. Recently, a novel idea, which is energy harvesting from wing vibration under the assumption that a certain magnitude of vibration is allowed, has been attracting attention. The balancing problem between piezoelectric energy harvesting and active control is an active research topic. In our previous work, we developed a coupled analysis system for active control of piezoelectric– structure–fluid interaction problems. In the present study, we integrate a piezoelectric energy harvester model. With numerical examples, we considered the limit cycle oscillation (LCO) of a cantilevered beam in an axial flow. Then, we showed that LCO suppression was achieved while the energy scavenged by harvesters was at least as much as the energy consumed by the active control.