中小型液化气船独立C型液货舱内部压力计算与分析  

Calculation and analysis of internal pressure in C type liquid cargo tank of small and medium LNG ship

作　　者：董国忠 尹群[1] 娄本强 吴晨飞 沈中祥 DONG Guo-zhong;YIN Qun;LOU Ben-qiang;WU Chen-fei;SHEN Zhong-xiang(School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China;Shanghai Waigaoqiao Shipbuilding Co.,Ltd.,Shanghai 200137,China;School of Civil Engineering and Architecture,Jiangsu University of Science and Technology,Zhenjiang 212100,China)

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212100 [2]上海外高桥造船有限公司,上海200137 [3]江苏科技大学土木工程与建筑学院,江苏镇江212100

出　　处：《舰船科学技术》2023年第18期45-50,共6页Ship Science and Technology

基　　金：江苏省博士后科研资助计划项目(2021K562C)。

摘　　要：液化天然气船在运输过程中由于船体的运动引起货物重心加速度而产生压力,常采用二维加速度椭圆法或三维加速度椭球法计算。本文基于《国际散装运输液化气体船舶构造与设备规则》(IGC)相关规则,在对液货舱内部压力解析分析基础上,编制相关三维加速度计算应用程序,开展三维加速度椭球法、二维加速度椭圆法、DNV船级社法对典型液舱内部压力计算精度对比研究。对某22000m^(3)液化气船C型液货舱内部压力计算分析,获得其内部压力分布规律,并开展横稳心高GM值对C型液货舱内部压力的影响研究。In the transportation process of liquefied natural gas(LNG)ship,the pressure is caused by the acceleration of cargo center of gravity due to the motion of the ship.This article is based on the international bulk transport liquefied gas ship construction and equipment of rules rules(IGC),based on the resolution of the cargo tank internal pressure,prepare the rel-evant three-dimensional acceleration computing applications,carry out three-dimensional acceleration ellipsoid method,two-dimensional acceleration ellipse method,DNV classification method for typical tank internal pressure calculation accuracy analysis.Then,the internal pressure of a 22000 m^(3) liquefied gas carrier C type cargo tank is calculated and analyzed,and the internal pressure distribution law is obtained.Finally,the influence of high GM value of transverse metacenter on internal pressure of cargo tank is studied.

关 键 词：液化天然气船 C型舱 三维加速度椭球法 液货舱内部压力 横稳心高 

分 类 号：U663.2[交通运输工程—船舶及航道工程]