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Time-domain analysis of vortex-induced vibration of a flexible mining riser transporting flow with various velocities and densities

文献类型：期刊论文

作者Duan JL(段金龙)4; Zhou JF(周济福)3,4; You, Yunxiang1,2; Wang X(王旭)3,4
刊名OCEAN ENGINEERING
出版日期2021-01-15
卷号220页码:18
关键词Vortex-induced vibration Internal flow Time domain prediction method Coupling of in-line and cross-flow responses
ISSN号0029-8018
DOI10.1016/j.oceaneng.2020.108427
通讯作者Duan, Jinlong(duanjl@imech.ac.cn)
英文摘要Vortex-induced vibration (VIV) can be inevitably encountered in deep ocean mining. As the internal flow is transported axially in the flexible riser, complicated VIV dynamics occurs undergoing both the internal and external flows. Therefore, the object here is to explore the effect of the internal flow with different velocities and densities on VIV response under various uniform current. In this study, a semi-empirical time domain prediction method for VIV dynamics of flexible risers considering both internal and external flows is introduced and adopted. The governing equations are discretized and solved by using finite element method. Firstly, validations are made for VIV without internal flow based on the numerical results and experimental data. Comparisons prove that the simulation could reproduce the VIV dynamics of a flexible riser. Then with the increase of the internal flow velocities and densities, the effect of the internal flow on VIV response is examined. It is found that the dominating frequency and the root mean square (RMS) displacement in both in-line (IL) and cross-flow (CF) directions are notably influenced by the internal flow velocity and density. Besides, the drag coefficient and IL mean deflection are detected magnified while the internal flow velocity and density are increased under different external flow velocities. It should be noted that the change of the internal flow velocity and density could trigger new mode response of the flexible riser, leading to mode transition for the IL and CF dominating modes. In addition, VIV dynamics shows a similar changing trend with the increase of the internal flow velocity and density when the flexible fluid-conveying riser is subjected to different external flow velocities.
分类号一类
WOS关键词PIPES CONVEYING FLUID ; LABORATORY MEASUREMENTS ; VERTICAL RISER ; INTERNAL FLOW ; LONG ; SIMULATION ; CYLINDER ; DYNAMICS ; UNIFORM ; PREDICTION
资助项目National Key R&D Program of China[2017YFC1404200] ; National Natural Science Foundation of China[11572332] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040203] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22000000]
WOS研究方向Engineering ; Oceanography
语种英语
WOS记录号WOS:000607850200039
资助机构National Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
其他责任者Duan, Jinlong
源URL[http://dspace.imech.ac.cn/handle/311007/86010]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位1.Shanghai Jiao Tong Univ, State Key Lab Ocean Engn, Shanghai 200240, Peoples R China
2.Shanghai Jiao Tong Univ, Collaborat Innovat Ctr Adv Ship & Deep Sea Explor, Shanghai 200240, Peoples R China;
3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
4.Inst Mech, CAS Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China;
推荐引用方式
GB/T 7714		 Duan JL,Zhou JF,You, Yunxiang,et al. Time-domain analysis of vortex-induced vibration of a flexible mining riser transporting flow with various velocities and densities[J]. OCEAN ENGINEERING,2021,220:18.
APA 段金龙,周济福,You, Yunxiang,&王旭.(2021).Time-domain analysis of vortex-induced vibration of a flexible mining riser transporting flow with various velocities and densities.OCEAN ENGINEERING,220,18.
MLA 段金龙,et al."Time-domain analysis of vortex-induced vibration of a flexible mining riser transporting flow with various velocities and densities".OCEAN ENGINEERING 220(2021):18.

入库方式： OAI收割

来源：力学研究所

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