中文摘要：

为开发性能优良的风力机专用翼型,提出一种借助广义的中弧线函数和对称翼型的型线函数构造翼型表面形状的方法。首先,推导了表征翼型几何特性的多项式插值函数表达式,改变多项式的系数和阶次,可对翼型的几何形状进行调整和优化;然后,为验证新方法精确描述翼型曲线的能力,分析比较了5种典型翼型应用不同阶次插值函数的拟合精度;最后,以s809和NACA63-412为例,对原翼型和多项式拟合翼型的气动特性进行比较,显示出所提出的方法具有良好的几何和气动收敛特性。

英文摘要：

The kind of method using the generalized arc function and symmetric airfoil type line function was proposed to describe airfoil surface shape to develop the high performance special airfoils of wind turbine. The polynomial interpolation function is derived and the airfoil geometry can be changed and optimized by adjusting polynomial coefficients and time. Then,the new method＇s ability which accurately describes the airfoil curve was validated and fitting precision of different order interpolation function for the five typical airfoils was analyzed. Finally, the aerodynamic characteristics of the original airfoil and polynomial fitting airfoil are compared. The results show that the new method has good geometry and pneumatic convergence properties.