Optimization of blade motion of vertical axis turbine

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• 作者：Yong Ma 駿剿/a> ; Liang Zhang 庿丿/a> ; Zhi-yang Zhang 张之閿/a>…
• 关键词：tidal current energy ; vertical axis turbine ; optimization of blade motion ; single disk multiple stream ; tube model ; CFD
• 刊名：China Ocean Engineering
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：30
• 期：2
• 页码：297-308
• 全文大小：687 KB
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  Wang, L. B., 2003. On Study of an Optimal Method for Hydrodynamic Performance of A New Type of Vertical-Axis Turbine, MSc. Thesis, Harbin Engineering University, Harbin, China. (in Chinese)
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• 作者单位：Yong Ma 马 勇 (1)
  Liang Zhang 张 亮 (1)
  Zhi-yang Zhang 张之阳 (1)
  Duan-feng Han 韩端锋 (1)
  
  1. College of Shipbuilding Engineering, Harbin Engineering University, Harbin, 150001, China
  
• 刊物类别：Engineering
• 刊物主题：Oceanography
  Chinese Library of Science
  Offshore Engineering
  Geoengineering, Foundations, Hydraulics
  
• 出版者：Chinese Ocean Engineering Society, co-published with Springer

文摘

In this paper, a method is proposed to improve the energy efficiency of the vertical axis turbine. First of all, a single disk multiple stream-tube model is used to calculate individual fitness. Genetic algorithm is adopted to optimize blade pitch motion of vertical axis turbine with the maximum energy efficiency being selected as the optimization objective. Then, a particular data processing method is proposed, fitting the result data into a cosine-like curve. After that, a general formula calculating the blade motion is developed. Finally, CFD simulation is used to validate the blade pitch motion formula. The results show that the turbine’s energy efficiency becomes higher after the optimization of blade pitch motion; compared with the fixed pitch turbine, the efficiency of variable-pitch turbine is significantly improved by the active blade pitch control; the energy efficiency declines gradually with the growth of speed ratio; besides, compactness has lager effect on the blade motion while the number of blades has little effect on it.