Effect of heave damping on energy extraction performance of fully passive oscillating hydrofoils

Jianan Xu; Zudong Li; Yuzhi Yao

doi:10.1117/12.2641226

20 September 2022 Effect of heave damping on energy extraction performance of fully passive oscillating hydrofoils

Jianan Xu, Zudong Li, Yuzhi Yao

Proceedings Volume 12261, International Conference on Mechanical Design and Simulation (MDS 2022); 122611B (2022) https://doi.org/10.1117/12.2641226
Event: Second International Conference on Mechanical Design and Simulation (MDS 2022), 2022, Wuhan, China

Abstract

The purpose of this paper is to investigate the influence mechanism of heave damping on the energy extraction of a fully passive oscillating hydrofoil in a turbulent environment. The effects of heave damping on the performance parameters and the shedding process of the leading-edge vorticity are studied. The results show that increasing heave damping will change the synchronization of heave motion and pitch motion, and then affect the formation and shedding process of the leading-edge vorticity. This leads to a reduction in the force and speed of the hydrofoil, and the final captured energy will decrease accordingly. In addition, some damping in heave is required by the fully passive oscillating hydrofoil to stabilize the amplitude of motion, thus avoiding excessive amplitude that may damage the structural integrity of the equipment.

Citation Download Citation

Jianan Xu, Zudong Li, and Yuzhi Yao "Effect of heave damping on energy extraction performance of fully passive oscillating hydrofoils", Proc. SPIE 12261, International Conference on Mechanical Design and Simulation (MDS 2022), 122611B (20 September 2022); https://doi.org/10.1117/12.2641226

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