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[1]徐万海,栾英森,李志彪,等.倾斜柔性抑制圆柱的涡激振动特性[J].天津大学学报(自然科学版),2017,(06):637-642.[doi:10.11784/tdxbz201603072]
 Xu Wanhai,Luan Yingsen,Li Zhibiao,et al.Vortex-Induced Vibrations of an Inclined Flexible Straked Cylinder[J].Journal of Tianjin University,2017,(06):637-642.[doi:10.11784/tdxbz201603072]
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倾斜柔性抑制圆柱的涡激振动特性()
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《天津大学学报(自然科学版)》[ISSN:0493-2137/CN:12-1127/N]

卷:
期数:
2017年06
页码:
637-642
栏目:
建筑工程
出版日期:
2017-06-19

文章信息/Info

Title:
Vortex-Induced Vibrations of an Inclined Flexible Straked Cylinder
文章编号:
0493-2137(2017)06-0637-06
作者:
徐万海1 栾英森1 李志彪2 及春宁1
1. 天津大学水利工程仿真与安全国家重点实验室,天津 300072;2. 中国石油天然气股份有限公司规划总院,北京 100083
Author(s):
Xu Wanhai1 Luan Yingsen1 Li Zhibiao2 Ji Chunning1
1. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China
2. PetroChina Planning and Engineering Institute, Beijing 100083, China
关键词:
螺旋列板 倾斜圆柱 涡激振动 模态分析
Keywords:
helical strakes inclined cylinder vortex-induced vibration mode analysis
分类号:
TV312
DOI:
10.11784/tdxbz201603072
文献标志码:
A
摘要:
海洋工程中圆柱结构轴向与来流常存在一定倾斜角度, 倾斜状态下柔性圆柱涡激振动特性十分复杂, 至今仍缺乏倾斜圆柱涡激振动抑制的相关研究.在室内拖曳水池中开展了长度5.6 m、倾角30°、长径比350的倾斜柔性圆柱涡激振动抑制实验, 采用应变片测量结构顺向流与横向流的应变信息, 运用模态分析对应变数据进行分析处理.通过附带螺旋列板装置的抑制圆柱与光滑圆柱实验结果对比, 发现螺旋列板对倾斜圆柱涡激振动有一定抑制作用, 然而对响应幅值、控制模态等抑制效果并不理想.
Abstract:
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.

参考文献/References:

[1] Sarpkaya T. A critical review of the intrinsic nature of vortex-induced vibrations[J]. Journal of Fluids and
Structures, 2004, 19(4):389-447.
[2] Wu Xiaodong, Ge Fei, Hong Youshi. A review of recent studies on vortex-induced vibrations of long slender cylinders[J]. Journal of Fluids and Structures, 2012, 28:292-308.
[3] Norwegian Marine Technology Research Institute. Marintek Review No. 1:Systematic Investigation of Efficiency of Helical Strakes[R]. Trondheim, 2005.
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[8] 徐万海, 马烨璇, 杜杰, 等. 45度大倾角倾斜柔性圆柱涡激振动不相关原则实验验证[J]. 振动与冲击, 2017, 36(7):177-183.
Xu Wanhai, Ma Yexuan, Du Jie, et al. Experiments on the validity of Independence Principle applied to vortex-induced vibrations of a flexible cylinder inclined at 45°[J]. Journal of Vibration and Shock, 2017, 36(7):177-183(in Chinese).
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备注/Memo

备注/Memo:
收稿日期: 2016-03-25; 修回日期: 2016-09-14.
作者简介: 徐万海(1981—), 男, 博士, 副教授, xuwanhai@tju.edu.cn.
通讯作者: 及春宁, cnji@tju.edu.cn.
基金项目: 国家重点基础研究发展计划(973计划)资助项目(2014CB046801); 国家自然科学基金资助项目(51479135, 51579175,
51679167).
Supported by the National Basic Research Program of China(No.,2014CB046801)and the National Natural Science Foundation of China (Nos.,51479135, 51579175 and 51679167).
更新日期/Last Update: 2017-06-10