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Vol. 171, Issue 5, May 2014, pp. 51-58

 

Bullet

 

Modal Analysis on Fluid-Structure Interaction of MW-Level Vertical Axis Wind Turbine Tower
 

Tan Jiqiu, Zhong Dingqing, Wang Qiong

Department of Mechanical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China

E-mail: 1447953488@qq.com

 

Received: 11 March 2014 /Accepted: 30 April 2014 /Published: 31 May 2014

Digital Sensors and Sensor Sysstems

 

Abstract: In order to avoid resonance problem of MW-level vertical axis wind turbine induced by wind, a flow field model of the MW-level vertical axis wind turbine is established by using the fluid flow control equations, calculate flow’s velocity and pressure of the MW-level vertical axis wind turbine and load onto tower’s before and after surface, study the Modal analysis of fluid-structure interaction of MW-level vertical axis wind turbine tower. The results show that fluid-structure interaction field of MW- level vertical axis wind turbine tower has little effect on the modal vibration mode, but has a great effect on its natural frequency and the maximum deformation, and the influence will decrease with increasing of modal order; MW-level vertical axis wind turbine tower needs to be raised the stiffness and strength, its structure also needs to be optimized; In the case of satisfy the intensity, the larger the ratio of the tower height and wind turbines diameter, the more soft the MW-level vertical axis wind turbine tower, the lower its frequency.

 

Keywords: Tower, Fluid-structure interaction, Modal analysis, MW-level wind turbine.

 

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