The application discloses a fluid
kinetic energy capturing device based on a vortex cylinder and a flexible wake slapping plate, wherein the vortex cylinder energy
collection system is used for generating vortex-induced
vibration response under the action of fluid to collect fluid
kinetic energy; the flexible wake slapping energy
collection system is arranged at the rear of the vortex cylinder energy
collection system in the flow direction; when the vortex cylinder energy collection
system cannot be excited out of the
resonance lock-in frequency area, the flexible wake slapping energy collection
system is used for capturing fluid
kinetic energy under the action of the unsteady flow vortex environment shed at the rear of the vortex cylinder energy collection
system; when the vortex cylinder energy collection system generates vortex-induced
vibration response under the action of fluid, the flexible wake slapping energy collection system is used for assisting in capturing fluid kinetic energy. The energy collection mode of the application is suitable for a wide range of working flow rates, not only improves the working ability out of the
resonance lock-in frequency area, but also improves the fluid energy conversion rate in a composite manner, has strong energy collection robustness,
high energy conversion rate, is green and environment-friendly, and is suitable for
underwater environment.