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	Dynamic stress characteristics of Kaplan turbine blades
	Xiao Ruofu ; Wang Zhengwei ; Luo Yongyao
	2010-05-11 ; 2010-05-11
关键词	Practical Experimental/ blades computational fluid dynamics fatigue flow instability flow simulation hydraulic turbines stress analysis structural engineering/ dynamic stress characteristics Kaplan turbine blades unsteady flow computational fluid dynamics pressure distributions runner fluid-solid interfaces dynamic structural simulations fluid-structure interaction method fatigue hydraulic turbines/ A4785 Applied fluid mechanics A4710 General fluid dynamics theory, simulation and other computational methods A4715F Stability of laminar flows A4720 Hydrodynamic stability and instability E2300 Mechanical machinery E2130 Fluid mechanics and aerodynamics (mechanical engineering) E2180E Fracture mechanics and hardness (mechanical engineering) E2110 Mechanical structures E2210 Mechanical components
中文摘要	The unsteady flow fields at 13 operating points in a Kaplan turbine were simulated using computational fluid dynamics to obtain the pressure distributions on the runner fluid-solid interfaces. The results were then used in dynamic structural simulations of the Kaplan turbine runner blade at 13 operating points using the fluid-structure interaction method. The results show that the hydraulic unit stability deteriorates at low-power conditions with lower downstream level and increasing heads, and that the major dynamic stresses caused by the pressure fluctuations at high heads and low-power operating points directly lead to runner blade failure. The results provide reference data for the analyses of stress and fatigue in other components of hydraulic turbines.
语种	中文 ; 中文
出版者	Tsinghua University Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/25561]
专题	清华大学
推荐引用方式 GB/T 7714	Xiao Ruofu,Wang Zhengwei,Luo Yongyao. Dynamic stress characteristics of Kaplan turbine blades[J],2010, 2010.
APA	Xiao Ruofu,Wang Zhengwei,&Luo Yongyao.(2010).Dynamic stress characteristics of Kaplan turbine blades..
MLA	Xiao Ruofu,et al."Dynamic stress characteristics of Kaplan turbine blades".(2010).

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