摘要
一、前言 文献[1]、[2]给出了旋成面叶栅变分有限元法,但与其它解法相似,仍需用叠代法逐次逼近求得出气角,才能得到满足库塔条件的叶栅内流场。特别对离心叶栅,困难更大,处理欠妥即会出现无解。而且,迄今为止发表的叶栅解法都仅能近似求得栅后流线,影响了S_1、S_2叠代求解精度。 本文利用变域变分原理及有限元解法相结合。
In this paper, the Variational finite element method with variant domain for solving direct problem on arbitray revolutionary streamsheet surface is suggested. At first the variational principle [1] is modified, the variationals of functional to potential function Φ and to variant location of downstream s are discritized by eightnode isoparametric element respectively. Then two system of equaltions about Φ and s are solved by iteration. The flow field and location of downstream are obtained.The method and computational program can be used to solve the cascade with several splitter blades without modification.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
1989年第4期396-398,共3页
Journal of Engineering Thermophysics
