液化气体船几种典型液货舱的内部压力计算  

Internal Pressure Calculation for the Typical Cargo Tanks of a Liquefied Gas Carrie

作　　者：刘文华 朱越星 张弛 LIU Wenhua;ZHU Yuexing;ZHANG Chi(Shanghai Merchant Ship Design and Research Institute,Shanghai 201203,China)

机构地区：[1]上海船舶研究设计院,上海201203

出　　处：《船舶与海洋工程》2023年第6期9-16,共8页Naval Architecture and Ocean Engineering

摘　　要：根据三维加速度椭球方程,推导任意横摇角和纵摇角对应的纵向、横向和垂向等3个方向的加速度分量及合成加速度的表达式。分别采用几何作图法和坐标转换法给出A型液货舱、球形封头C型单体和双体液货舱、碟形封头C型单体液货舱的液柱高度表达式。通过对比可知,几何作图法与坐标转换法的液柱高度表达式完全一致。液柱高度耦合方式和坐标系旋转的顺序对最终的内部压力计算会有一定的影响。Based on the three-dimensional acceleration ellipsoid equation,the expressions are derived for the longitudinal,transverse and vertical acceleration components corresponding to roll angle and pitch angle,as well as the composite acceleration.The geometric method and coordinate transformation method are used to respectively provide the liquid column height expressions for type-A cargo tanks,spherical head type-C single and twin body cargo tanks,and the dished head type-C single body cargo tanks.It shows in the comparison that the calculation expressions of geometric method and the coordinate transformation method are completely consistent,except the coupling method of liquid column height and the order of coordinate system rotation have some influence on the final internal pressure calculation.

关 键 词：气体运输船 椭球法 内部压力 液柱高度 

分 类 号：U674.133.3[交通运输工程—船舶及航道工程]