Study on Multimode Vortex-Induced Vibration of Deepwater Riser in Different Flow Fields by Finite Element Simulations

被引：11

作者：

Chen, Weimin ^{[1
]}

Li, Min ^{[2
]}

Zhang, Liwu ^{[1
]}

Tan, Tiancai ^{[2
]}

机构：

[1] Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China

[2] Beijing Univ Aeronaut & Astronaut, Sch Aeronaut Sci & Engn, Beijing 100191, Peoples R China

来源：

JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING-TRANSACTIONS OF THE ASME | 2016年 / 138卷 / 01期

关键词：

LONG; PREDICTION; VIV;

D O I：

10.1115/1.4031729

中图分类号：

P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

Multimode vortex-induced vibration (VIV) of slender risers, respectively, in stepped and shear flows is explored by finite element simulations. Taking account of the interaction-between fluid and structure, a hydrodynamic model is proposed and embedded into the finite element simulation so as to carry out dynamic response of multimode VIV in time-domain. Multimode VIV in both stepped and shear flow fields is examined. In the case of stepped flow, a semi-empirical formula of modal weight is given. In the case of shear flow, modal excitation region can be determined based on modal energy, and participating modes approximately distribute in scattering groups.

引用

页数：8

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