Experimental and three-dimensional performance analysis of a bio-inspired fish-ridge vertical axis wind rotor

Chao Ma, Dingbiao Wang, Lei Song, Weiguang Wang and Guanghui Wang

Energy, 2024, vol. 305, issue C

Abstract: The savonius vertical axis wind rotor has a simple structure, making it a suitable choice for power generation in small-scale, low wind speed environments. However, its wind energy conversion efficiency is low. To improve the conversion efficiency of the wind rotor using the proposed fish-bridge structure, the wind tunnel tests are conducted to collect actual wind and rotational speeds. In addition, Computational Fluid Dynamics (CFD) simulation is conducted to reveal potential operating mechanisms, with special emphasis on analyzing the effects of aspect ratio and end plate on the performance of the fish-ridge wind rotor. The CFD results show that the wind power coefficient of this wind rotor presents an increasing trend with the increase of the aspect ratio and the area of the end plate, and that with round end plates is improved by 24.26 % compared to that of the wind rotor without end plates, and that with an aspect ratio of 3.5 is improved by 32.58 % compared to that of the wind rotor with an aspect ratio of 1. By increasing the aspect ratio and the end plate area of the wind rotor, the contact airflow is raised and concentrated, which improves the aerodynamic performance of the wind rotor.

Keywords: Savonius rotor; Fish-ridge; Performance; Wind tunnel; Aspect ratio; End plate (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:305:y:2024:i:c:s0360544224019984

DOI: 10.1016/j.energy.2024.132224

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