An analytical model for estimating the maximum energy harvesting efficiency from vortex-induced vibration
Peng Han, Wei‐Xi Huang, Denghui Qin, Junlei Wang, Jisheng Zhao
Abstract
The present work presents an analytical model (AM) based on a nonlinear reduced-order model (ROM) for estimating the maximum efficiency (ηm) of energy harvesting from vortex-induced vibration (VIV) of a circular cylinder. The proposed AM was validated through comparisons against both the origin ROM and experiments over a wide range of parameters. Of interest, it provided a low-cost analytical approximation relating the maximum efficiency ηm to physical parameters. As inspired by the modified Griffin plot, the use of AM allowed the collapse of the maximum efficiency ηm as a function of the combined mass-damping parameter α. Of significance, the presented AM should be not only effective for estimating the maximum efficiency ηm but also useful to shed light on VIV dynamics.