摘要
本文用二维边界元法计算了混流式水轮机全部引水部件的二维势流流场.提出了引水部件二维势流模型.在边界元计算中,采用了常数单元积分的解析公式,并将库塔条件直接引入了边界元方程中.避免了复杂多连通域中库塔条件的多重迭代.计算结果与一个模型实验结果吻合较好.
The paper presents a 2-D potential flow calculation of guide passages in Francis turbines by using the boundary element method. A simplified 2-D flow model is proposed. Analytical formulations for constant element integration are used in the BEM calculation with Kutta's conditions directly introduced into the BEM equations which makes it possible to avoid cumbersome iterations required for satisfying said conditions in a complicated field containing numerous guide vanes. The calculated results conform relatively well with model test findings. 5 figs and 6 refs.
出处
《动力工程》
CSCD
1991年第4期49-55,共7页
Power Engineering
