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전단류에서 긴 유연관의 와유기진동에 관한 실험적 연구

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dc.contributor.author홍섭-
dc.contributor.author최종수-
dc.contributor.author김형우-
dc.contributor.author여태경-
dc.contributor.author김진하-
dc.contributor.author김영식-
dc.contributor.author강성길-
dc.contributor.author임창규-
dc.date.accessioned2021-12-08T18:41:15Z-
dc.date.available2021-12-08T18:41:15Z-
dc.date.issued20110619-
dc.identifier.urihttps://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/5518-
dc.description.abstractExperiments on vortex-induced vibration of a long pipe model (L/D = 400) were conducted in linearly sheared flows. The top flow speed was varied from 0.2m/sec to 2.0m/sec in step of 0.1m/sec. A fiber glass pipe was instrumented with FBG (Fiber Bragg Grating) sensors to measure the strains in VIV responses. The number of strain measurement stations was 15 for each fiber with spacing of 1m. Initial pipe tension was varied as 80kgf, 90kgf and 100kgf. The modal analysis of strain measurement data was conducted. The peak VIV frequency coincides with the Strouhal frequency corresponding to 70% of the maximum flow speed. The mode number of the maximum amplitude vibration is determined by the integer ratio of the peak vibration frequency to the natural frequency of the model. The main vibration mode is caused by the VIV mode corresponding to the flow speed at the mid region of the model. There exist traveling waves in high flow speed region and standing waves in low speed region. The VIV response in linearly sheared flow is multi- mode.-
dc.language영어-
dc.language.isoENG-
dc.title전단류에서 긴 유연관의 와유기진동에 관한 실험적 연구-
dc.title.alternativeExperimental Study on Vortex-Induced Vibration of a Long Flexible Pipe in Sheared Flows-
dc.typeConference-
dc.identifier.doiISBN 978-1-880653-95-1-
dc.citation.titleThe 9th Ocean Mining Symposium-
dc.citation.volume1-
dc.citation.number1-
dc.citation.startPage70-
dc.citation.endPage77-
dc.citation.conferenceNameThe 9th Ocean Mining Symposium-
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친환경해양개발연구본부 > 친환경연료추진연구센터 > Conference Papers
친환경해양개발연구본부 > 심해공학연구센터 > Conference Papers

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