摘要
本文应用普遍张量理论,把钱伟长的有关不可压缩粘性流体力学的变分原理推广应用到叶轮机内流问题。文中把叶轮机的叶片进口段和出口段 A_2面取作S_2 流面,并将S_2 流面简化为非自由流面。在A_2 面上作用的粘性力作为已知值处理(可通过近似计算确定),在变分计算时不参与变分。
With the generalized tensor theory used, the variational principle onincompressible viscous flow,by professor Tsien Weichang in 1984, is generalizedand thus applicable to the problem of turbomachine's interior flow. Flowsurface A_2 at the blade inlet and outlet sections is taken as the flow surfaceS_2 and further simplified to be an unfree one. The viscous force acting onA_2 is referred to as a given value, i. c. to be determined by approximatecalculation, and it will not take place in variational calculation.
关键词
叶轮机
汽轮机
粘性流动
变分原理
generalized tensor theory
variational principle
dissipation function
turbomachine
viscous flow
