升力型垂直轴风力机相互作用研究

摘要/Abstract

摘要： 为了研究两个垂直轴风力发电机之间的相互影响，采用非定常流体动力学数值计算方法，研究了不同间距下两台垂直轴风力机的运行状况，分析了1/3旋转周期内、不同相位角的情况下，两叶轮周边的压力场和涡量场。结果表明：叶轮1的非定常尾流会影响处于其尾流区的叶轮2的压力场及涡量场，因此，叶轮1对叶轮2的影响随着叶轮间距的增大而逐渐减弱；当间距到达6D(D为风轮直径)时，叶轮2的最大功率系数约等于叶轮1的最大功率系数。

关键词: 升力型, 垂直轴风力机, 数值模拟, 尾流效应, 相互作用

Abstract: The transient computational fluid dynamics (CFD) was carried out to study the interactions between two vertical axis wind turbines(VAWTs) at different distances. The pressure fields and the vorticity fields of the two wind turbines in one-third rotation period were also analyzed. The results indicate that the unsteady wake flows of the rotor No.1 will affect the pressure fields and vorticity fields of the rotor No.2 significantly. This wake flow effects on the rotor No.2 are weakened with the increasing of the distances. That is the reason why the power coefficient of the rotor No.2 is increased with the distance increasing. When the distance is equal to 6D(D is the diameter of the rotor),the maximum power coefficient of the rotor No.2 is approximately equal to that of the rotor NO.1.

Key words: lift-type, vertical axis wind turbine(VAWT)；numerical simulation；wake effect；interaction

中图分类号:

TK83

张周周;陈建;徐洪涛;刘鹏玮. 升力型垂直轴风力机相互作用研究[J]. 中国机械工程.

ZHANG Zhouzhou;CHEN Jian;XU Hongtao;LIU Pengwei. Investigation of Interaction between Lift-type VAWTs[J]. China Mechanical Engineering.

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