The characteristics research of tube vortex based on large eddy simulation

摘要：

　　Numerical simulation of three-dimensional transient turbulent flow in the whole flow passage of a Francis turbine were based upon the large eddy simulation(LES) technique on Smargorinsky model and sliding mesh technology.The steady flow data simulated with the standard k-ε model was used as the initial conditions for the unsteady simulation.The results show that LES can do well transient turbulent flow simulation in a Francis turbine with complex geometry.The computational method provides some reference for exploring the mechanism of eddy formation in a complex turbulent of hydraulic machinery.

关键词： Francis turbine draft tube vortex Large Eddy Simulation

作者: Dun Zhang Yuan Zheng Ying Zhao Jianjun Huang

作者单位: Water Resources and Hydropower College, Hohai University, Nanjing, Jiangsu, 210098 Energy and Electric College, Hohai University, Nanjing, Jiangsu, 210098 Wuxi City Flood Control Project Management Office, Wuxi, Jiangsu, 214000

会议类型: 国际会议

会议名称: the Second International Conference on Frontiers of Manufacturing and Design Science(第二届制造与设计科学国际会议(ICFMD 2011))

会议地点: 台湾

会议语种:英文

页码: 3657-3661

在线出版日期: 2011-12-11（万方平台首次上网日期，不代表论文的发表时间）