摘要
(清华大学热能工程系,北京100084)要优化水泵水轮机转轮设计,应了解转轮在内的水泵水轮机全流道的流动特性。采用SIMPLEC算法和标准k-ε湍流模型对某一用全三维逆向设计方法设计的高水头可逆式水泵水轮机进行了全流道双向三维湍流数值模拟。详细分析了转轮内部及蜗壳、尾水管中的流动情况,并对不同部件的水力损失以及转轮的性能进行了预估。计算结果揭示了水泵水轮机转轮内部流动的复杂性,分析了转轮各部件间的关系,优化并改进了转轮设计。
In order to optimize the design of the reversible pump-turbine runner, the flow characters on the whole flow passage including the runner should be understood. The SIMPLEC algorithm and the Standard k-ε Turbulence model are applied to carry on the three-dimensional two-way numerical simulation on the whole flow passage of a high-head reversible pump-turbine runner, which is designed with the full three-dimensional reverse design method. The current situation of the volute, tail and the runner interior is analyzed in detail. The hydraulic losses of different parts and the performance of the runner are also estimated. The result reveals the interior flow complexity of the pump-turbine runner, and the relations and influence of different parts, which leads to an improved runner design.
出处
《工程力学》
EI
CSCD
北大核心
2006年第5期157-162,共6页
Engineering Mechanics
基金
国家自然基金资助项目(50479006)
中国博士后科学基金资助金资助项目(2004035325)
关键词
水泵水轮机
反问题
全三维
数值模拟
全流道
reversible engine
inverse problem
full 3-D
numerical simulation
whole flow passage
