顶张力立管三维涡激振动研究  

Three-Dimensional Vortex-Induced Vibration of Top Tensioned Riser

作　　者：崔鹏[1] 郭海燕[1] 顾洪禄 李效民[1] 李福恒 Cui Peng;Guo Haiyan;Gu Honglu;Li Xiaomin;Li Fuheng(College of Engineering,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学工程学院,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2022年第11期149-156,共8页Periodical of Ocean University of China

基　　金：国家自然科学基金项目(U2006226,51979257);山东省自然科学基金项目(ZR2020ME261,ZR2019MEE032)资助。

摘　　要：为研究深水顶张力立管的三维涡激振动(VIV)响应特性,本文基于向量式有限元法(VFIFE),采用弹簧模型模拟张紧器对立管的作用,考虑立管轴向变形对立管涡激振动的影响,建立深海立管的三维非线性振动模型,并结合Modified-Rayleigh尾流振子模型,对立管顺流向、横向和垂向三维涡激振动进行了分析。通过与试验对比,本文模型能够较准确地预报立管的涡激振动动力响应。分析结果表明:立管轴向变形会引起立管轴向张力的明显增大,在立管分析中,轴向变形引起的轴向张力变化是不可忽略的。Based on the vector form intrinsic finite element(VFIFE)method,the spring model is used to simulate the action of the tensioners on the riser.Considering the influence of the axial deformation of the riser on the vortex-induced vibration(VIV)of the riser,a three-dimensional nonlinear vibration model of the deep-sea riser is established.Combined with the Modified-Rayleigh wake oscillator model,the in-line,cross-flow and vertical three-dimensional vortex-induced vibrations of the riser are analyzed.The comparison with the test shows that the model in this paper can accurately predict the dynamic response of the riser′s vortex-induced vibration.Through the analysis of the riser’s axial deformation and the change of the axial tension,it is found that the axial deformation of the riser will cause a significant increase in the axial tension of the riser.In the analysis of the riser,the change of the axial tension caused by the axial deformation is not negligible.

关 键 词：顶张力立管 向量式有限元 三维模型 涡激振动 尾流振子模型 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]