Experimental investigation of the wake-induced vibration of a rectangular cantilever cylinder in the wake of another = 장방형기둥의 wake에 의해서 야기되는 같은 모양의 단순지지기둥의 진동에 관한 실험적 고찰

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The wake-induced vibration of a structure in the wake of another is investigated experimentally, using a rectangular cantilever cylinder having side ratio of 2. Dynamic responses are measured to investigate the effect of system parameters on the aerodynamic instability. The parameters include the free stream wind velocity and the position of the downstream cantilever cylinder in the wake generated by the upstream cylinder. The range of Reynolds numbers covered in this experiment is about $8×10^3$ - $3.5×10^4$. The wind velocity at which vortex shedding frequency coincides with the natural frequency of the downstream cantilever cylinder lies in this range. In the uniform flow, galloping is founded to be the major mechanism for the vibration of the cantilever cylinder. In the wake, However, the cantilever cylinder vibrates with a large amplitude when the vortex shedding frequency coincides with the natural frequency of the cantilever cylinder. The vibration amplitude decreases notably as distance between two cylinders becomes large. No galloping phenomenon is observed when the cantilever cylinder is placed in the centerline of the wake generated by the upstream cylinder. As the cantilever cylinder keeps apart from the centerline, the cylinder gallops with smaller amplitude than in the uniform flow.
Advisors
Cho, Hyung-SuckresearcherLee, Hearesearcher조형석researcher이해researcher
Description
한국과학기술원 : 기계공학과,
Publisher
한국과학기술원
Issue Date
1980
Identifier
62785/325007 / 000781155
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 기계공학과, 1980.2, [ [iii], 51 p. ]

URI
http://hdl.handle.net/10203/47061
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=62785&flag=dissertation
Appears in Collection
ME-Theses_Master(석사논문)
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