摘要
应用雷诺方程和ｋ－ε紊流模型对适用于地下水电站的窄高型混流式水轮机尾水管进行了数值模拟，得到了尾水管中速度场分布、涡带及二次流等流态的矢量图。将窄高型尾水管和常规尾水管作了性能比较和分析。通过试验资料对数值模拟方法进行了初步验证。
Numerical simulations of flow field of a high narrow turbine draft tube used in underground hydraulic power station and that of a conventional draft tube have been conducted by solving Reynolds equations and k ε equations.The vector diagrams of flow pattern in terms of velocity distributions,vortex bands and secondary flow within the draft tube have been obtained.The performances of two kinds draft tubes are compared and analysed with each other.Reults from numerical model have been primarily verified by experimental data.
出处
《长江科学院院报》
CSCD
北大核心
1999年第6期5-8,共4页
Journal of Changjiang River Scientific Research Institute
关键词
水轮机
尾水管
数值模拟
流场
窄高型
hydraulic turbine
turbine draft tube
numerical simulation
