摘要：Based on the Joukowsky transformation and Theodorsen method, a novel parametric function (shape function) for wind turbine airfoils has been developed. The airfoil design space and shape control equations also have been studied. Results of the analysis of a typical wind turbine airfoil are shown to illustrate the evaluation process and to demonstrate the rate of convergence of the geometric characteristics. The coordinates and aerodynamic performance of approximate airfoils is rapidly close to the baseline airfoil corresponding to increasing orders of polynomial. Comparison of the RFOIL prediction and experimental results for the baseline airfoil generally show good agreement. A universal method for three-dimensional blade integration-"Shape function/Distribution function" is presented. By changing the parameters of shape function and distribution functions, a three dimensional blade can be designed and then transformed into the physical space in which the actual geometry is defined. Application of this method to a wind turbine blade is presented and the differences of power performance between the represented blade and original one are less than 0.5%. This method is particularly simple and convenient for bodies of streamline forms. Copyright © by HING TECHNOLOGY LETTERS PRESS.

摘要：在风力机翼型型线形状优化设计中,提出了一种新的基于Joukowski保角变换的通用翼型型线表征形式。建立了翼型多目标形状优化设计的数学模型,应用改进的多目标遗传优化算法,设计得到了4种性能优越的风力机专用翼型。详细分析了WT180翼型的空气动力学特性,该翼型在设计工况和非设计工况下都具有良好的气动性能,具有较低的前缘粗糙度敏感性。与目前风力机常用翼型相比,新翼型在主要工作攻角范围内,光滑和粗糙条件下的升力系数更高,升阻比更大,其气动性能相比传统翼型表现出明显的提高。