LNG液舱与船体耦合运动稳定性分析  

Stability analysis of coupling motion between LNG tank and ship

作　　者：程文阁 宋建华 CHENG Wenge;SONG Jianhua(Tianjin Maritime College,Tianjin 300350,China)

机构地区：[1]天津海运职业学院,天津300350

出　　处：《舰船科学技术》2024年第22期85-88,共4页Ship Science and Technology

摘　　要：对LNG液舱与船体耦合运动稳定性分析可以有效提升船舶航行安全性。传统试验方法存在周期长、费用高等问题,本文通过建立船体与液舱的耦合运动坐标系,分析液舱和船舶运动方程,并通过不断迭代计算液舱与船体的耦合运动状态。根据耦合运动状态方程对LNG液舱与船体进行耦合运动数值分析,得到了液舱内流体的运动分析结果,分析了不同频率、不同充水率下LNG船舶横摇角的变化情况。本文的研究结果对LNG船舶结构设计和强度分析具有一定辅助作用。The analysis of the coupled motion stability of LNG tank and hull can effectively improve the safety of ship navigation.The traditional test method has the problems of long period and high cost.In this paper,the coupled motion coordinate system of hull and tank is established,the motion equation of tank and ship is analyzed,and the coupled motion state of tank and hull is calculated iteratively.According to the coupled motion equation of state,the coupled motion of LNG tank and ship is numerically analyzed.The results of fluid motion analysis in tank are obtained,and the changes of roll Angle of LNG ship under different frequency and different water filling rate are analyzed.The research results of this paper are helpful to the structural design and strength analysis of LNG ships.

关 键 词：LNG船舶 液舱 耦合运动 仿真分析 

分 类 号：U667.65[交通运输工程—船舶及航道工程]