风力机三维旋转效应模型研究

INVESTIGATION ON THREE DIMENSIONAL ROTATIONAL EFFECT MODEL FOR WIND TURBINE

在NREL phase VI实验数据的基础上,比较6种不同的三维旋转效应模型。6种模型分别与自由涡尾迹方法耦合,计算该算例叶片的气动性能,并比较6种模型计算的差异。三维旋转效应模型能提高自由涡尾迹方法预估风力机气动性能的准确性,且准确度与是否准确地修正叶片径向截面翼型数据直接相关。

The three dimensional rotational effect is one of important factors for aerodynamic characteristic prediction of wind turbines. Six existing three dimensional rotational effect models were compared based on NREL phase VI experiment data. The aerodynamic performance of the blade was calculated by a free vortex wake scheme coupled with the six models, and the results were analyzed. The three dimensional rotational effect models could improve the prediction accuracy for aerodynamic performance of wind turbines through the free vortex wake scheme, and the accuracy was directly associated with the ability of correcting the airfoil data of radial sections.