风力机叶片气动载荷研究方法探究

Research on Aerodynamic Load Calculation Method of Wind Turbine Blade

在风力机叶片气动载荷计算方法方面,CFD方法耗时较长,不适合载荷快速评估的需要。动量叶素理论方法以二维翼型气动数据为依据,结合经验公式进行计算,但无法给出载荷分布的具体信息。为了探索高效、准确的载荷评估方法。本文针对风切变入流条件,采用非定常求解方法进行二维叶片气动模型的载荷计算研究,并与三维计算结果相对比,分析了两种方法对计算结果的影响与各自的适用性。

In calculation method of wind turbine blade load,CFD method is time-consuming that it is unfit to estimate load rapidly BEM theory is used to design wind blade in engineering,this theory can design blade based on 2D aerodynamic airfoil data and empirical formula,but load distribution information can＇t been gotten.In order to search rapid and accurate load estimation method,2D blade model load calculation was studied by using non-steady method in this paper,2D and 3D calculating result was compared,and the influence for result and applicability of two method was analyzed.