Vortex-Induced Vibrations of an Inclined Flexible Straked Cylinder

被引：0
|
作者：
Xu W. [1 ]
Luan Y. [1 ]
Li Z. [2 ]
Ji C. [1 ]
机构：
[1] State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin
[2] PetroChina Planning and Engineering Institute, Beijing
来源：
Tianjin Daxue Xuebao (Ziran Kexue yu Gongcheng Jishu Ban)/Journal of Tianjin University Science and Technology | 2017年 / 50卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Helical strakes; Inclined cylinder; Mode analysis; Vortex-induced vibration;
D O I：
10.11784/tdxbz201603072
中图分类号：
学科分类号：
摘要：
Marine cylinder structures are often inclined with respect to the direction of oncoming flow.Hence, the vortex-induced vibrations(VIV)suppression of an inclined flexible cylinder is very complicated.Till now, there are few studies on this issue.A model experiment was performed in order to investigate the VIV suppression of an inclined flexible cylinder in a towing tank.The length of cylinder model was 5.6, m, the inclined angle was 30°, and the ratio of the length to diameter was equal to 350.The strain gages were adopted to measure the dynamic response in cross-flow(CF)and in-line(IL)directions.Modal analysis was used to analyze the measured strain signals.The experimental results of the inclined straked cylinder and the bare one were compared.It was indicated that helical strakes are effective in suppressing VIV of inclined flexible cylinder, while its suppression on response amplitudes and dominate modes is not apparent. © 2017, Editorial Board of Journal of Tianjin University(Science and Technology). All right reserved.
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页码：637 / 642
页数：5
相关论文
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