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	Investigation on probability of self-oscillation induced by vortex shedding from a thin cambered blade
	Zhu Baoshan ; Kyoji, K. ; Cao Shuliang
	2010-05-11 ; 2010-05-11
关键词	Practical Theoretical or Mathematical Experimental/ blades fluid oscillations probability strain gauges vortices/ self-oscillation probability vortex shedding thin cambered blade circuit-water tunnel twinkle laser sheet high-speed-camera photography torque strain gauges pitching motions lock-in boundaries/ A4785 Applied fluid mechanics A4730 Rotational flow, vortices, buoyancy and other flows involving body forces A4735 Waves in fluid dynamics A0250 Probability theory, stochastic processes, and statistics E2130 Fluid mechanics and aerodynamics (mechanical engineering) E2200 Mechanical components, systems and devices E0210J Statistics
中文摘要	The possibility of self-oscillation of a thin cambered blade, when the attack angle is near its stall angle, is experimentally investigated in a circuit-water tunnel. The vortex-shedding patterns for different attack angles of the blade are visualized by two methods: a twinkle laser sheet and high-speed-camera photography. The torque acting on the blade is measured using strain gauges. To confirm whether the vortex shedding would induce the self-oscillation of the blade, the blade is subjected to pitching motions, and by changing the pitching frequency and amplitude, the lock-in boundaries for certain attack angles are determined. Phase differences between the blade's pitching displacement and the torque to oscillate it are also investigated. The probability of self-oscillation of the blade is inferred from these phase differences.
语种	中文 ; 中文
出版者	Chinese J. Mech. Eng ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/25827]
专题	清华大学
推荐引用方式 GB/T 7714	Zhu Baoshan,Kyoji, K.,Cao Shuliang. Investigation on probability of self-oscillation induced by vortex shedding from a thin cambered blade[J],2010, 2010.
APA	Zhu Baoshan,Kyoji, K.,&Cao Shuliang.(2010).Investigation on probability of self-oscillation induced by vortex shedding from a thin cambered blade..
MLA	Zhu Baoshan,et al."Investigation on probability of self-oscillation induced by vortex shedding from a thin cambered blade".(2010).

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