Performance enhancement of piezoelectric energy harvesters from wake galloping

作者：Abdessattar Abdelkefi, John M. Scanlon, Edward D. McDowell, Muhammad R. Hajj · 发表于：Applied Physics Letters · 年份：2013 · DOI：10.1063/1.4816075 · 被引用次数：158 · 研究领域：Innovative Energy Harvesting Technologies、Fluid Dynamics and Vibration Analysis、Vibration Control and Rheological Fluids

Experiments are performed to investigate the effects of wake galloping on the range of flow speeds over which a galloping-based piezoaeroelastic energy harvester can be effectively used. Two different upstream cylinders and a wide range of spacing between the upstream and downstream cylinders are considered. Bifurcation diagrams and type of instability for different setups are determined. The results show a complex relation between the upstream circular cylinder size, the spacing between the two cylinders, the flow speed, and the load resistance on one hand, and the level of harvested power on the other hand.