摘要
本文给出了任意旋成面叶栅C类气动杂交命题的周角函数型变分有限元解法。研制了相应的程序,成功地计算了轴流式与离心式叶栅的算例。对于给定的叶片设计厚度分布和吸力面上的设计压力(或速度)分布,应用本文的计算方法可直接解出满足设计要求的叶型型线以及流动特性参数分布。
The Variational FE calculation is carried out in this paper foe the hybrid aerodynamic problem of Type-C of cascades on an arbitrary streamsheet of revolution in terms of the angular function. The thickness distribution of the blade and the pressure (or velocity) distribution on the suction surface of the blade are specified to calculate the blade contour and the flow field characteristics.Two examples of calculation (including radial and axial cascades) illustrate that the method provided in this paper is highly effective and widely applicable.
关键词
叶轮机械
气动计算
有限元法
叶栅
Aerodynamic calculations in turbomachines
Cascades
Variational principle
Finite element
Angular function
