风机叶型杂交命题的有限元解法

A Finite Element Method for Solving Hybrid Problem of Cascades in Ventilator

本文以任意旋成面叶栅C类杂交命题矩函数型的变分原理为基础,提供了一种能同时考虑气动、强度和制造工艺等多种性能要求的新的风机叶片设计方法。对于给定的叶片厚度分布和吸力面上的设计压力或速度分布,应用本文方法可求得满足设计要求的叶片几何形状和叶栅流场。

Based on the variational principle in terms of the moment function for type-C hybrid problem of cascades on an arbitrary streamsheet of revolution, this paper presents a new method for designing a ventilator's blades which can satisfy requirements of many performances such as aerodynamics, strength, manufacturing engineering, etc. With the thickness distribution of a blade and the pressure or velocity distribution on its suction specified, the blade contour and the flow field of cascades that satisfy the given design conditions can be found out by applying the method in this paper.