中国计量大学学报2017，Vol.28Issue(2)：153-158,6.DOI:10.3969/j.issn.2096-2835.2017.02.004
深海立管涡激振动及其抑制方法研究
Research on vortex-induced vibration and its suppression method ofdeep sea risers
摘要
Abstract
Vortex-induced vibration is one of the most important factors leading to fatigue even failure of deep sea risers.It seriously decreases the service life of the risers.By using the numerical simulation method,VIV response and its suppression methods of deep sea risers were researched.The finite element software-ABAQUS was used to simulate the various risers at different flow rates,to obtain the vibration response and the maximum lateral displacements.The results show that the phenomenon of "lock-in" occurs and the vibration response of risers is strenthened when the reduced velocity is between 4.5 and 6.In addition, after installing the helical strakes, the critical flow of resonance occurs from 0.2m/s to 0.6m/s, and vortex-induced vibration is suppressed.关键词
深海立管/涡激振动/抑制方法/螺旋侧板/数值模拟Key words
deep sea risers/VIV/suppression method/helical strakes/numerical simulation分类
海洋科学引用本文复制引用
孔令滨,张火明,陈阳波,方贵盛..深海立管涡激振动及其抑制方法研究[J].中国计量大学学报,2017,28(2):153-158,6.基金项目
上海交通大学海洋工程国家重点实验室开放课题(No.1516). （No.1516）
