波流作用下东海海底管道悬跨段水动力分析  

Hydrodynamic Analysis of Suspended Span Section of Submarine Pipeline in East China Sea under Wave and Current Action

作　　者：郎一鸣 许文兵 廖仲毅 向毅 邱海荣 LANG Yiming;XU Wenbing;LIAO Zhongyi;XIANG Yi;QIU Hairong(CNOOC(China)Limited Shanghai Branch,Shanghai 200030,China)

机构地区：[1]中海石油(中国)有限公司上海分公司,上海200030

出　　处：《船舶工程》2025年第3期124-135,共12页Ship Engineering

基　　金：中海油综合科研资助项目(KJZL-2023-SH03)。

摘　　要：[目的]悬跨海底管道在波浪、水流及管道自重等荷载作用下,会产生过大的弯矩而引起破坏,也会在水动力作用下,当涡激振动频率与管道固有频率接近时引发“共振”破坏。[方法]运用计算流体力学软件Fluent,通过二次开发构建了数值波流水槽,根据东海某海底管道实际情况,对波浪、水流各组合条件下的管道周围水动力场进行数值模拟,[结果]得到其涡旋脱落情况、管线水平受力及垂直受力变化情况,分析管线在水平方向和垂直方向的最大受力及涡激振动频率变化规律。[结论]相比于传统依赖阻力系数和惯性力系数的经验公式计算方法,此数值模拟技术不受固定系数限制,能更全面地反映管道波流力随波流要素、管道直径变化的影响,并揭示了各计算方法在不同工况的适用性和准确性差异。[Purpose]Under the action of waves,water flow and the pipe's own weight,the suspended submarine pipeline will generate excessive bending moment and cause damage.Under the action of hydrodynamic force,the vortex-induced vibration frequency will also cause"resonance"failure when it is close to the natural frequency of the pipeline.[Method]Based on Fluent computational fluid dynamics software,a numerical wave flow channel is constructed through secondary development.According to the actual situation of a submarine pipeline in the East China Sea,the hydrodynamic field around the pipeline under various combination conditions of wave and current is numerically simulated,and the vortex shedding condition,horizontal force and vertical force changes of the pipeline are obtained.[Result]The maximum force and vortex-induced vibration frequency of the pipeline in horizontal and vertical directions are analyzed.[Conclusion]The results show that compared with the traditional empirical formula calculation method based on drag coefficient and inertia force coefficient,this numerical simulation technique is not limited by fixed coefficient,and can more comprehensively reflect the influence of wave flow force on the change of wave flow factors and pipe diameter,and reveal the applicability and accuracy differences of each calculation method under different working conditions.

关 键 词：波流 海底管道 悬跨 水动力分析 

分 类 号：TE973[石油与天然气工程—石油机械设备]