摘要
基于k-ε紊流模型和三维时均N-S方程,进行了混流式水轮机全流道的三维定常湍流计算。捕捉到了水轮机过流部件内的流场和非最优工况下转轮通道及尾水管内的旋涡结构与演化特征等流动信息。结果表明,水轮机的全通道CFD分析能够较为准确地预测出水轮机过流部件内的性能参数及内部流场结构,所得到的结果对进行水轮机的水力设计或改型优化设计等研究具有重要的指导意义。
Numerical simulation of three dirnensional turbulent flow through a Francis turbine was conducted on the basis of Reynolds equations closed by k-ε turbulence model with general coordinates, The results show that the flow field structures and the characteristics of swirling flow and its developing process in the Francis turbine can be well predicted. It can be concluded that the results arc able to provide important guidance for the hydraulic design of Francis turbine or its optimization.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2006年第2期181-189,共9页
Chinese Journal of Hydrodynamics
基金
教育部高校博点基金(200400070019)
陕西省教育厅专项科研计划项目(05JK264)
关键词
混流式水轮机
全流道
三维紊流
数值研究
Francis turbine
full flow passage
3D turbulent flow
numerical investigation
