Investigation on the effectiveness of control rods in suppressing VIV of a flexible cylinder

被引：0
|
作者：
Xu W.-H. [1 ]
Yang M. [1 ,2 ]
Lu Y. [2 ]
机构：
[1] State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin
[2] School of Civil Engineering, Tianjin University, Tianjin
来源：
Chuan Bo Li Xue/Journal of Ship Mechanics | 2019年 / 23卷 / 02期
关键词：
Control rods; Flexible cylinder; Suppression; Vortex-induced vibration;
D O I：
10.3969/j.issn.1007-7294.2019.02.006
中图分类号：
学科分类号：
摘要：
Vortex-induced vibrations (VIV) is a complicated flow-structure interaction phenomenon that may cause fatigue damage of flexible cylinder structures in ocean engineering. VIV suppression devices can effectively extend the fatigue life of marine structures. VIV of cylinders can be suppressed by control rods, but the effectiveness in high Re and the layout of multiple control rods need further studies. Experimental investigations were conducted to evaluate the VIV suppression of control rods and their layout for flexible cylinder models (length to diameter ratio is 350, mass ratio is 1.9, the highest Re can reach 16 000) in this paper. The results show that control rods play a major role in suppressing VIV of a flexible cylinder and the appearance of the higher harmonics, in addition, four control rods are more efficient than three ones. © 2019, Editorial Board of Journal of Ship Mechanics. All right reserved.
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页码：172 / 179
页数：7
相关论文
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