摘要
海洋平台中的月池是贯穿整个平台的垂向开口结构,当月池内部流体运动频率与月池结构固有频率接近时会发生共振现象,严重威胁平台的安全性与作业效率。本研究针对带月池平台的流体共振现象,基于势流理论与计算流体力学的数值模型,模拟不同周期波浪作用下月池内部流场动态特性,系统研究了无凸缘结构及3种不同凸缘结构下月池内流体水动力特性及共振抑制机理。对比分析了无凸缘结构及3种凸缘结构在不同波浪周期下的月池响应特性。研究结果表明:凸缘结构对月池内流体共振现象有明显抑制作用,凸缘结构产生的涡旋可与自由液面产生充分作用,增加能量耗散并改善月池内部波面幅值,研究结果可为海洋工程结构物中月池结构的被动式抑制优化设计提供参考。
The moonpool in offshore platforms is a vertical opening structure that spans the entire platform.When the frequency of fluid motion inside the moonpool approaches the inherent frequency of the moonpool structure,resonance occurs,posing a serious threat to the platform's safety and operational efficiency.This study focuses on the fluid resonance phenomenon in moonpool platforms.Based on potential flow theory and a numerical model of computational fluid dynamics,the dynamic characteristics of the flow field inside the moonpool under different wave periods are simulated.The hydrodynamic characteristics and resonance suppression mechanisms of the fluid inside the moonpool are systematically studied for the structure with no convex appendage and three different convex appendage structures.A comparative analysis of the moonpool response characteristics under various wave periods is conducted.The results show that the convex appendage have a significant suppressive effect on the fluid resonance phenomenon in the moonpool.The vortices generated by the convex appendage interact effectively with the free surface,increasing energy dissipation and improving the wave amplitude inside the moonpool.The findings of this study can provide a reference for the passive suppression optimization design of moonpool structures in offshore engineering.
作者
贾尚儒
付升雷
邓小康
吕海宁
秦睿
朱高平
JIA Shangru;FU Shenglei;DENG Xiaokang;LV Haining;QIN Rui;ZHU Gaoping(CNOOC Research Institute Co.,Ltd.,Beijing 100028,China;State Kay Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《舰船科学技术》
北大核心
2026年第2期7-14,共8页
Ship Science and Technology
基金
国家能源深水油气工程技术研发中心主任基金资助项目(KJQZ-2024-2103)。
关键词
月池
CFD
水动力特性
抑制装置
月池共振
moon pool
CFD
hydrodynamic characterization
suppression device
moon pool resonance
