摘要
为了求解水泵水轮机转轮内部的双向流动,提出了基于全三维转轮叶片设计模型的叶型渐近方法。该方法从水轮机方向设计目标叶型,并得到水轮机方向流场。再利用设计程序,从水泵流动方向设计叶型,用单纯形加速法控制速度矩分布变量,使得该叶型逐步逼近目标叶型,并得到水泵方向的流场,即得到同一叶型的双向流场。根据计算出的流场可以预估转轮的双向能量性能与气蚀性能。对一高水头水泵水轮机进行了设计计算,结果表明,该方法是可行的。
A method was developed using blade shape approximation based on a full three-dimensional design model to solve the bidirectional flow problem of pump-turbine runners. The objective blade was designed in the turbine flow direction; while the flow field was obtained with the blade in the pump flow direction then designed. Accelerating simplex method was applied to control the values of swirl distribution variables and make the designed blade progressive to the objective blade. The bidirectional flow fields were both simulated, with the runner efficiency and cavitation estimated. The results of the design of a high-head pump-turbine runner show that the method is applicable and effective.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第11期1953-1956,1961,共5页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金资助项目(50479006)
关键词
水泵水轮机
全三维设计
双向流动
单纯形加速法
pump-turbine runner
full three dimensional design
bidirectional flow
accelerating simplex method
