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	Numerical simulation of 3D cavitating turbulent flow in Francis turbine
	Liu, Shuhong ; Wu, Yulin ; Luo, Xianwu
	2010-05-10 ; 2010-05-10
会议名称	Proceedings of the ASME Fluids Engineering Division Summer Conference - 2005, Vol 1, Pts A and B ; ASME Fluids Engineering Division Summer Meeting ; Houston, TX ; Web of Science
关键词	Engineering, Mechanical
中文摘要	Generally, cavitation occurs very easily when liquid local pressure in the Francis turbine falls below the saturated vapor pressure. It will injure the hydropower plant seriously by some problems, and has become one of the main concerns in the field of hydraulic machinery. In this paper, we present steady simulation on cavitation performed through the whole passage of a prototype Francis turbine with mixture model for multiphase flow, and full cavitation model for cavitation effect, from the commercial code of FLUENT 6.1. The simulation is conducted at several operating conditions, and the internal flow conditions and the critical cavitation number were obtained for each case. The simulation results indicate that the internal flow condition in the flow parts before the runner is not affected by the cavitating flow. The tendency of the cavitating flow in the runner and draft tube agrees well with the turbine empirical results, and the critical cavitation number has been quantitatively predicted.
会议录出版者	AMER SOC MECHANICAL ENGINEERS ; NEW YORK ; THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/19599]
专题	清华大学
推荐引用方式 GB/T 7714	Liu, Shuhong,Wu, Yulin,Luo, Xianwu. Numerical simulation of 3D cavitating turbulent flow in Francis turbine[C]. 见:Proceedings of the ASME Fluids Engineering Division Summer Conference - 2005, Vol 1, Pts A and B, ASME Fluids Engineering Division Summer Meeting, Houston, TX, Web of Science.

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