摘要
考虑月池流体的耦合效应研究Spar平台主体垂荡运动特性。根据可变形控制体质量守恒定律及动量守恒定律建立月池内流体垂向运动方程;考虑顶张紧立管(TTRs)及张紧器刚度,建立平台主体垂荡与月池流体耦合运动模型。采用势流理论求解平台主体受到的波浪激励力,数值计算主体垂荡响应,分析月池底部挡板面积及耦合系数对主体垂荡的影响。结果表明,月池流体对主体垂荡有抑制作用,合理设计挡板面积可减小平台主体的垂荡运动。随着挡板开口面积的增加,主体垂荡RAO逐渐呈现两个峰,波浪周期接近月池流体垂向振动固有周期时也会激起主体较大的垂荡运动;平台主体与月池流体之间的耦合系数对主体垂荡运动影响显著。
This paper studies the heave motion of Spar platform hull considering the moonpool fluid coupling.The vertical motion equation of the moonpool fluid is established by the conservation of mass and momentum of deformable control volume.By considering the stiffness of TTRs and the tension ring,the model of coupled bull heave-moonpool fluid vertical vibration is established.The wave excitation force of the platform hull is calculated by potential flow theory,and the hull heave response is solved numerically.The area of moonpool bottom baffle plate and the coupling coefficients are studied to reveal their effect on hull heave.It is found that the hull heave motion will be restrained by the moonpool fluid and can be reduced by properly design the baffle plate area.The hull heave RAO appears two peaks with the increasing of the baffle plate opening area.The higher heave is exhibited when the wave period is near the natural period of moonpool fluid vertical vibration.The coupling coefficients between hull and moonpool fluid affect the hull heave significantly.
出处
《振动工程学报》
EI
CSCD
北大核心
2014年第1期104-110,共7页
Journal of Vibration Engineering
基金
国家自然科学基金资助项目(51179125
51079097)
作者简介
刘利琴（1977-）,女,副教授.电话：（022）27406074,E-mail：liuliqin@tju.edu.cn
