Journal of Shanghai Jiaotong University >
Energy Conversion Efficiency of Wavy Conical Wind Energy Capture Structure
Received date: 2022-05-03
Revised date: 2022-11-05
Accepted date: 2023-01-19
Online published: 2023-03-21
In order to improve the energy harvesting efficiency of the wind energy capture structure, this paper proposes a novel wavy conical bladeless wind energy capture structure, and establishes a mathematical model for energy conversion of the wavy conical wind energy capture structure. The Reynolds-averaged N-S equations in combination with the SST k-ω turbulence model is used to numerically simulate the vortex-induced vibration response of the energy capture structure, and analyze the effects of mass ratio and damping ratio on the vortex-induced vibration response and wind energy conversion efficiency of the wavy conical wind energy capture structure. The results show that the wavy conical energy capture structure with a mass ratio of m*=2 and a damping ratio of ζ=0.05 can obtain a wider lock-in interval and higher energy conversion efficiency. It is also found that the mass damping ratio m*ζ directly affects the energy conversion efficiency, a suitable combination of m*ζ can improve the energy conversion efficiency, with an average energy conversion efficiency of nearly 31% higher at m*ζ=0.10 than at m*ζ=0.05. The research results can provide theoretical support for the improvement of the energy conversion efficiency of bladeless wind turbines.
ZOU Lin, YAN Yulong, TAO Fan, LIU Diwei, ZHENG Yunlong . Energy Conversion Efficiency of Wavy Conical Wind Energy Capture Structure[J]. Journal of Shanghai Jiaotong University, 2023 , 57(8) : 1067 -1077 . DOI: 10.16183/j.cnki.jsjtu.2022.137
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