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	Dynamic stresses in a Francis turbine runner based on fluid-structure interaction analysis
	Xiao Ruofu ; Wang Zhengwei ; Luo Yongyao
	2010-10-12 ; 2010-10-12
关键词	Practical Theoretical or Mathematical/ blades computational fluid dynamics cracks fatigue hydraulic turbines stress analysis/ dynamic stresses fluid-structure interaction analysis fatigue cracks hydraulic turbines computational fluid dynamics simulations spiral case stay vane guide vane runner vane draft tube Francis turbine runner pressure distribution runner blade CFD/ B8240 Hydroelectric power stations and plants E2310 Power and plant engineering (mechanical engineering) E2210 Mechanical components E2180E Fracture mechanics and hardness (mechanical engineering) E2130 Fluid mechanics and aerodynamics (mechanical engineering)
中文摘要	Fatigue and cracks have occurred in many large hydraulic turbines after they were put into production. The cracks are thought to be due to dynamic stresses in the runner caused by hydraulic forces. Computational fluid dynamics (CFD) simulations that included the spiral case, stay vane, guide vane, runner vane, and draft tube were run at various operating points to analyze the pressure distribution on the runner surface and the stress characteristics in the runner due to the fluid-structure interactions (FSI). The dynamic stresses in the Francis turbine runner at the most dangerous operating point were then analyzed. The results show that the dynamic stresses caused by the hydraulic forces during off-design operating points are one of the main reasons for the fatigue and cracks in the runner blade. The results can be used to optimize the runner and to analyze other critical components in the hydraulic turbine.
语种	英语
出版者	Tsinghua University Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78568]
专题	清华大学
推荐引用方式 GB/T 7714	Xiao Ruofu,Wang Zhengwei,Luo Yongyao. Dynamic stresses in a Francis turbine runner based on fluid-structure interaction analysis[J],2010, 2010.
APA	Xiao Ruofu,Wang Zhengwei,&Luo Yongyao.(2010).Dynamic stresses in a Francis turbine runner based on fluid-structure interaction analysis..
MLA	Xiao Ruofu,et al."Dynamic stresses in a Francis turbine runner based on fluid-structure interaction analysis".(2010).

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