不同对称翼型H型风力机气动性能数值模拟研究

风轮是风力发电机利用风能的核心部件，而翼型作为风轮的关键零件，其结构参数的选择的不同会对风力机性能造成极大的影响。本文选取3种常用的H型垂直轴风力机NACA系列对称翼型的绕流流动，建立其湍流流场的模型，采用移动网格技术对其进行数值分析与计算，得出风轮的力矩系数、功率及风能利用率的变化规律，在此基础上，详细分析了不同的对称翼型对垂直轴风力机风轮气动性能的影响。根据其气动性能曲线，拟合出给定工况下，风能利用率随尖速比的变化公式，更好的实现定量分析。

Numerical Simulation Study of Aerodynamic Performance for H-vertical Axis Wind Turbine with Different Symmetrical Airfoils

Wind wheel, for wind energy utilization, is the core component of the wind turbine.Airfoils as a key part of the wind wheel, the different selection for their structure parameters may cause a great deal of influence.Paper chose three common NACA series symmetrical airfoils and established their turbulent flow field model.Sliding mesh technique was used for numerical simulation and calculation.Torque,power,power coefficient and their variation trendencies were obtained. The different airfoils affected on the aerodynamic performance was particularly analyzed.According to the aerodynamic performance curve,caught the formula which wind energy utilization changed with the speed ratio, bettered the quantitative analysis.