流-势函数法的人工密度格式在叶型设计中的应用

本文采用流-势函数法进行跨音速叶型设计,用人工密度格式取代类型相关格式。与相关格式相比,人工密度格式具有全场算法统一、收敛过程稳定等优点。本文提供的设计算例表明,该方法能有效地进行叶型的初始工程设计。

APPLICATION OF AN ARTIFICIAL DENSITY SCHEME OF POTENTIAL STREAM FUNCTION METHOD TO DESIGN OF AIRFOIL

A potential stream function method is applied to designing transonic airfoils. The flowfield is computed by solving the full potential equations with the aid of a relaxation method. An artificial density scheme has been developed to replace the type related scheme. As compared with the latter, the artificial density scheme employs an identical scheme in whole field and converges steadily. Numerical results show that this method is applicable to initial designing of compressor airfoils and provides a better approximation of the actual conditions by taking into account the effect of the axial-velocity-ratio.