Effect of additional cylinders on power-extraction performance of a Savonius vertical-axis wind turbine

To improve the power-extraction performance of the Savonius vertical-axis wind turbine (S-VAWT), additional cylinders, which are used to control the fluid flow around the wind turbine blade, were introduced into the blade design. In contrast to the traditional numerical method, a mathematical model...

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Bibliographic Details
Published in:	Journal of Zhejiang University. A. Science Vol. 24; no. 6; pp. 531 - 542
Main Authors:	Yan, Yangyang, Zhang, Jintao, She, Junao, Liu, Wenhao, Deng, Jianghong, Zhu, Jianyang
Format:	Journal Article
Language:	English
Published:	Hangzhou Zhejiang University Press 01-06-2023 Springer Nature B.V Institute of Robotics and Intelligent Systems,Wuhan University of Science and Technology,Wuhan 430081,China%Key Laboratory of Metallurgical Equipment and Control Technology,Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China
Subjects:	Civil Engineering Classical and Continuum Physics Cylinders Engineering Experimental methods Fluid flow Industrial Chemistry/Chemical Engineering Mathematical models Mechanical Engineering Numerical methods Research Article Taguchi methods Turbine blades Turbines Vertical axis wind turbines Wind effects Wind power Wind speed 田口实验方法 Additional cylinders Savonius型垂直轴风力机 Savonius vertical-axis wind turbine (S-VAWT) Wind-induced rotation 附加圆柱 Average power coefficient 平均功率系数风致转动 Taguchi experimental method Savonius vertical-axis wind turbine(S-VAWT)
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Summary:	To improve the power-extraction performance of the Savonius vertical-axis wind turbine (S-VAWT), additional cylinders, which are used to control the fluid flow around the wind turbine blade, were introduced into the blade design. In contrast to the traditional numerical method, a mathematical model in the form of a dynamical system was used in this study. A numerical calculation program that could effectively solve the equations of wind-induced rotation of S-VAWT was developed, and combined with the Taguchi experimental method to investigate the influence of additional cylinders on the power-extraction characteristics of the S-VAWT. The results showed that the additional cylinders have a significant impact on the power-extraction performance of the S-VAWT. At 4-m/s wind speed, the average power coefficient of the S-VAWT with additional cylinders is 15% higher than that of the conventional S-VAWT. After construction of the wind turbine prototype and power-extraction tests, the results showed that compared with a conventional S-VAWT, the output power was 29% higher for the S-VAWT with additional cylinders under the same particular conditions.
ISSN:	1673-565X 1862-1775
DOI:	10.1631/jzus.A2200292