影响风力发电机翼型气动性能的因素研究

翼型气动性能的优劣影响着风力发电机的发电效率,研究影响叶片翼型气动性能的因素具有重要意义。本文采用数值方法计算了文献中NACA0012翼型在Re=10^6时的气动性能参数并与试验值比较,验证了数值方法的正确性。通过对相对厚度、相对弯度、雷诺数等影响翼型气动特性的参数进行研究,结果表明:相对厚度小的翼型在小攻角范围可以获得更好的气动性能;当攻角大于失速角12°后,相对厚度大的翼型的气动性能更佳。在0°~20°攻角范围内,相对弯度和雷诺数越大,翼型的气动性能越好。

Research on Factors Affecting Aerodynamic Performance of Wind Turbine Airfoil

The advantages and disadvantages of airfoil aerodynamic performance affect the power generation efficiency of wind turbines.It is of great significance to study the factors affecting the aerodynamic performance of blade airfoil.The aerodynamic performance parameters of NACA0012 airfoil in Re=10^6 are calculated by numerical method and compared with the experimental values in this paper.The correctness of the numerical method is verified.The parameters affecting the aerodynamic characteristics of the airfoil were studied,such as relative thickness,relative camber and Reynolds number.The results show that the airfoil with small relative thickness can obtain better aerodynamic performance in the small angle of attack;when the angle of attack is greater than the stall angle of 12°,the aerodynamic performance of the relatively thick airfoil is better.In the range of 0°~20°angle of attack,the greater the relative camber and Reynolds number,the better the aerodynamic performance of the airfoil.