【作者】 郐艳荣； 周济福； 王旭；

【Author】 KUAI Yan-rong;ZHOU Ji-fu;WANG Xu;Key laboratory for Mechanics in Fluid Solid Coupling Systems,Institute of Mechanics,Chinese Academy of Sciences;School of Engineering Sciences,University of Chinese Academy of Sciences;

【机构】 中国科学院力学研究所流固耦合系统力学重点实验室； 中国科学院大学工程科学学院；

【摘要】 针对深海采矿系统上部悬链线立管,基于有限元计算平台分析悬链线立管在内流、海流和水面船作用下的动力响应。管内流体对立管的作用力采用动量定理计算,海流对立管的作用力采用Morison公式计算。分析表明:水面船作用下,悬链线立管的等效应力和水平位移随时间均呈周期性变化,且随水面船运动位移幅值的增加而增加,增加速率逐渐增大;悬链线立管的等效应力和水平位移随水面船运动周期的增加而减小,降低速率逐渐减小。此外,悬链线立管的最大等效应力和水平位移随管内流体密度和速度的增加而减小。更多还原

【Abstract】 Based on the finite element method,the dynamic response of the catenary riser under the action of internal flow,ocean current and vessel motion was simulated.The action of internal flow on the riser was calculated by the theorem of momentum and the action of ocean current on the riser was calculated by the Morison equation.The results show that the equivalent stress and horizontal displacement of catenary riser change periodically with time.The maximum equivalent stress and horizontal displacement increase with the displacement amplitude and decrease with the increase of motion period.Further,the maximum equivalent stress and horizontal displacement decrease with the density and velocity of the internal flow.更多还原