Bladeless wind turbine and its wind induced vibration characteristics

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Journal of Vibration and Shock ›› 2025, Vol. 44 ›› Issue (5) : 97-105.

VIBRATION AND MECHANICS SCIENCE

Bladeless wind turbine and its wind induced vibration characteristics

TANG Dalun1, LIU Yangzhao*1, DAI Kaoshan1, SHI Yuanfeng1, PU Qiong2, Del ChungMing Yang2, David Yáez3

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Abstract

In order to explore the wind vibration characteristics of bladeless wind turbines, a bladeless wind turbine with a height of 3 m and a rated power of 100 W was taken as the research object. Firstly, the finite element model of the wind turbine is established, the natural mode information is calculated, and the wind-induced vibration is predicted. Subsequently, a full-scale model of the turbine was tested in a wind tunnel. Finally, the experimental results are compared with the theoretical prediction results, and the wind-induced vibration law is comprehensively analyzed. The results show that the cross-wind displacement at the top of the fan increases first and then decreases with the increase of wind speed, showing a typical vortex phenomenon, so there is no need to consider safety measures such as braking system in high wind speed environment. At the same time, when the wind speed is stable, the displacement time history of the top of the fan is close to the standard sinusoidal curve, showing stable wind-induced vibration. In addition, the aerodynamic characteristics of the wind turbine in all directions are also about the same, with good adaptability to all wind directions, and there is no need to rely on an additional yaw system to cope with wind direction changes.

Key words

Bladeless wind turbines / Vortex resonance / Wind tunnel testing / Finite element calculations

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TANG Dalun1, LIU Yangzhao1, DAI Kaoshan1, SHI Yuanfeng1, PU Qiong2, Del ChungMing Yang2, David Yáez3. Bladeless wind turbine and its wind induced vibration characteristics[J]. Journal of Vibration and Shock, 2025, 44(5): 97-105

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