| Dynamic analysis of coupling between floating top-end heave and riser's vortex-induced vibration by using finite element simulations |
| Chen WM(陈伟民) ; Li M; Guo SX; Gan K; Chen, WM (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
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| 发表期刊 | APPLIED OCEAN RESEARCH
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| 2014-10
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| 卷号 | 48页码:1-9 |
| ISSN | 0141-1187
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| 摘要 | The dynamic coupling between floating top and submarine riser becomes more remarkable owing to larger fluctuation amplitude of floating platform in deeper water, compared to fixed platform in shallow water. In this study, the impacts of top-end vertical motion (heave) on riser's vortex-induced vibration (VIV) are explored by means of finite element simulations. A coupled hydrodynamic force approach, regarding vortex-induced lift force along with fluid drag force, is developed, which takes into account of the interaction between instantaneous structure motion and fluid dynamics. Then the dynamic responses of the integrate system including both floating top-end and a riser undergoing VIV are examined based on our numerical simulations. The influences of platform heave, in terms of heave frequencies and tension ratios, on riser's VIV are presented. Our numerical results show that the dynamic response displacement of riser becomes several times larger than the displacement for the case without top-end motion. The impact of top heave on riser's VIV gets larger as the modal order number drops. Moreover, an interesting phenomenon, called the mode transition, is observed particularly at lower vibration frequencies due to the natural dynamic characteristics of the slender riser. We suggest that, in practices of riser design, a combined excitation needs to be considered for the accurate dynamic analysis of slender marine structures subjected to a top-end motion and VIV. (C) 2014 Elsevier Ltd. All rights reserved. |
| 关键词 | Heave
Parameter Excitation
Vortex-induced Vibration
Slender Riser
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| 学科领域 | Engineering
; Oceanography
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| URL | 查看原文
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000346541200001
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| 项目资助者 | The authors of this paper would like to thank the financial support provided by the National Natural Sciences Foundation (Grant Nos. 11232012 and 11372320).
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| 课题组名称 | LMFS海洋环境与工程(LEM)
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/49496
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| 专题 | 流固耦合系统力学重点实验室
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| 通讯作者 | Chen, WM (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China. |
推荐引用方式
GB/T 7714 |
Chen WM,Li M,Guo SX,et al. Dynamic analysis of coupling between floating top-end heave and riser's vortex-induced vibration by using finite element simulations[J]. APPLIED OCEAN RESEARCH,2014,48:1-9.
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| APA |
陈伟民,Li M,Guo SX,Gan K,&Chen, WM .(2014).Dynamic analysis of coupling between floating top-end heave and riser's vortex-induced vibration by using finite element simulations.APPLIED OCEAN RESEARCH,48,1-9.
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| MLA |
陈伟民,et al."Dynamic analysis of coupling between floating top-end heave and riser's vortex-induced vibration by using finite element simulations".APPLIED OCEAN RESEARCH 48(2014):1-9.
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