几种翼型参数化方法研究

The Research on Some Parameterized Methods for Airfoil

文中研究了形函数线性扰动法、特征参数描述法、正交基函数法和CST方法这几种翼型参数化方法,对比了这几种翼型参数化方法用于对称翼型、弯度翼型和超临界翼型的拟合精度,拟合结果表明CST方法的拟合精度优于其他几种翼型参数化方法。建立了这几种翼型参数化方法的气动分析模型,采用拉丁超方试验设计方法获取样本点,构造了这几种翼型参数化方法的气动Kriging代理模型,将遗传算法与Kriging代理模型结合进行翼型的优化设计,并用两个算例对这几种翼型参数化方法进行验证。

Some parameterized methods for airfoil were investigated in this paper, which contain linear shape function method, PARSEC method, orthogonal basis function method and Class-Shape function Transformation method. The fitting accuracy of these parameterized methods was contrasted in symmetric airfoil, cambered airfoil and supercritical airfoil. The fitting results show that the fitting accuracy of CST method is better than other parameterized methods for airfoil. The aerodynamic analysis models of these parameterized methods for airfoil were constructed. The Latin hypercube method was employed to get a set of sample points. The aerodynamic Kriging models of these parameterized methods for airfoil were built. The airfoil was optimized by combining genetic algorithm with Kriging model. These parameterized methods for-airfoil were validated by two applications.