LNG燃料船气罐连接处所内的泄漏试验及数值模拟研究  

Experimental and Numerical Study of LNG Leakage in Tank Connection Space Onboard

作　　者：罗肖锋 程康[1] 范洪军[1] 田宇忠[1] 刘东进 LUO Xiao-feng CHENG Kang FAN Hong-jun TIAN Yu-zhong LIU Dong-jin(Wuhan Rule and Regulation Research Institute, China Classification Society, Wuhan 430022, China Zhangjiagang CIMC Sanctum Cryogenic Equipment Co., Ltd., Jiangsu Zhangjiagang 215632, China)

机构地区：[1]中国船级社武汉规范研究所,武汉430022 [2]张家港中集圣达因低温装备有限公司,江苏张家港215632

出　　处：《船舶工程》2016年第12期78-82,共5页Ship Engineering

摘　　要：为明确现有液化天然气(LNG)燃料船气罐连接处所使用过程中需遵循的各项指标,对气罐连接处所内LNG泄漏进行了试验和数值模拟。试验以典型尺度等比不锈钢方盒为箱体,对气罐连接处所的安全性进行了测试,并基于挪威三维计算流体力学(CFD)软件FLACS对相关工况进行了仿真计算。试验发现在一般条件和恶劣条件泄漏时,现有的船用气罐连接处所内没有形成累积压力,FLACS计算结果与试验结果完全吻合。研究结果表明,现有的船用气罐连接处所设计时可忽略累积压力的影响,但考虑到极限条件的存在,需对该处所进行评估,制定极限条件下的应急预案。To confirm the indexes followed in the tank connection space on liquefied natural gas（LNG） fueled ship, a set of experiments and numerical study are conducted in the tank connection space. The experiment taking stainless steel square box with dimension of equal proportion, the safety of tank connection space is tested. The simulating calculation for the related leakage condition is carried based on FLACS, the Norwegian software of CFD. The results show that there is no accumulated pressure in the tank connection space under the normal and bad conditions. The results of the FLACS calculation are the same as the test results. The study results show that when the current tank connection space onboard is designed, the influence of accumulated pressure can be ignored. But considering the possibility of limiting conditions, assessment should be done on the space and the emergent schemes should be made under limiting conditions.

关 键 词：LNG燃料船 气罐连接处所 泄漏 累积压力 FLACS 极限条件 

分 类 号：U674.13[交通运输工程—船舶及航道工程]