Flow control for the vertical axis wind turbine by means of flapping flexible foils
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- 作者：Mohamed Taher Bouzaher ; Mohamed Hadid…
- 关键词：Control mechanism ; Vertical axis wind turbine ; Stall ; Flexible foils ; Energy harnessing ; Efficiency
- 刊名：Journal of the Brazilian Society of Mechanical Sciences and Engineering
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：39
- 期：2
- 页码：457-470
- 全文大小：
- 刊物主题：Mechanical Engineering;
- 出版者：Springer Berlin Heidelberg
- ISSN：1806-3691
- 卷排序：39
文摘
An active flow control mechanism is proposed to improve the efficiency of the energy extraction for the vertical axis wind turbine. The proposed system consists of a vertical axis wind turbine with flexible blades. The conception is inspired from the vortex control mechanism utilized by the aero-/aqua animals to improve their performance via the flexion of their fins. The viscous non-stationary flow around the turbine is simulated using the ANSYS-FLUENT 15 software. The complex flapping motion is reproduced using a dynamic mesh technique and a user-defined function. The results show that, with this strategy of control, the turbine generates a higher moment coefficient due to the increase in the peaks of lift force caused by a better difference in the pressure between the two sides of the blade due to the flexure motion. The turbine power coefficient can reach 38 % enhancement for the optimal flow control conditions.