水轮机座环与导水机构流态研究的边界元法  

The Boundary Element Method of Flow Study on Stayring and Guide Vane of Hydraulic Turbine

作　　者：吴伟章[1] 吴玉林[2] 林汝长[2] 

机构地区：[1]哈尔滨大电机研究所 [2]清华大学

出　　处：《大电机技术》1989年第4期41-44,共4页Large Electric Machine and Hydraulic Turbine

摘　　要：本文用直接边界元法数值模拟水轮机座环和导水机构的双排环列叶栅内的不可压流体的流动。建立了双排叶栅绕流的边界元方程,把周期性边界条件和Kutta条件引入到方程中,实现了Kutta条件的非迭代计算的自动满足,节省了计算时间,计算结果与有关解析解及试验数据吻合较好。The direct Boundary Element Method (BEM)was used to calculate the potential flow of a water turbine in stayring and guide vanes in this paper. The equations for the flow of the double row circular cascades were derived with BEM.An effective method to deal with the Kutta conditions was proposed.And no iteration was needed in order to sutisfy the Kutta conditions. Thus the computation was short. A great of calculations for cascade potential flow was carried out. The results were fouod to be in good agreement with analytical solutions and expenrimental data.

关 键 词：水轮机 座环 导水机构 边界元法 

分 类 号：TK730.324[交通运输工程—轮机工程]