Dynamic analysis of coupling between floating top-end heave and riser's vortex-induced vibration by using finite element simulations

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	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
刊名	APPLIED OCEAN RESEARCH
	2014-10
通讯作者邮箱	wmchen@imech.ac.cn
卷号	48 页码:1-9
关键词	Heave Parameter excitation Vortex-induced vibration Slender riser
ISSN号	0141-1187
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.
产权排序	[Chen, Weimin; Guo, Shuangxi] Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; [Li, Min; Gan, Kuan] Beijing Univ Aeronaut & Astronaut, Sch Aeronaut Sci & Technol, Beijing 100191, Peoples R China
合作状况	国内
中文摘要	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.
学科主题	Engineering; Oceanography
收录类别	SCI ; EI
资助信息	The authors of this paper would like to thank the financial support provided by the National Natural Sciences Foundation (Grant Nos. 11232012 and 11372320).
原文出处	http://dx.doi.org/10.1016/j.apor.2014.07.005
语种	英语
WOS记录号	WOS:000346541200001
公开日期	2015-01-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/49497]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
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.
APA	陈伟民,Li M,Guo SX,&Gan K.(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.
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.