混流式水轮机转轮内部流场直接三维有限元计算

Direct Three-Dimensional Finite Element Calculation for Flow Field in Francis Turbine Runner

本文从变分原理出发导出了以势函数为未知数的混流式水轮机内部流场直接三维有限元求解方程及各边界方程,论述了求解过程,编写了程度,并给出了计算实例,结果表明,混流式水轮机内部流场直接三维有限元求解是可行的。

Proceeding from the variational principle and taking the potential function as variable, the authors of this paper have obtained linear equations of direct three-dimensional finite element and equations of the boundary conditions. The solving process has discussed. The FORTRAN program is compiled and a calculative example is given. The result shows that direct three-dimensional finite element calculation for flow field in Francis runner is feasible.