西安科技大学学报2026，Vol.46Issue(1)：71-80,10.DOI:10.13800/j.cnki.xakjdxxb.2026.0107
LNG接收站槽车泄漏扩散规律FLACS模拟研究
FLACS simulation study on the leakage and diffusion law of LNG receiving station tank truck
摘要
Abstract
Liquefied natural gas(LNG)is one of the important clean energy sources;however,it is prone to leakage and explosion accidents during storage and transportation,resulting in serious damage.This paper focuses on an LNG receiving terminal and systematically investigates the diffusion patterns of LNG under various factors during tanker operations,such as wind speed,leak diameter,and leak direc-tion,using numerical simulation methods.The results show that wind speed is the dominant factor af-fecting liquid pool evaporation and vapor cloud diffusion.An increase in wind speed significantly accel-erates liquid pool evaporation and drives the vapor cloud to drift along the wind direction.Under a wind speed of 40 m/s,the equivalent gas-liquid volume decreases by up to 99.6％and 91.1％compared to that under no-wind condition.The leak diameter is positively correlated with the maximum diffusion distance under the explosion lower limit,and the diffusion direction is significantly affected by wind speed.The furthest diffusion distances along the wind direction(+X)and perpendicular to the wind di-rection toward the terminal boundary(-Y)both increase with the leak diameter.Additionally,the vapor cloud concentration increases with height.The findings further enhance the safe transportation of LNG tankers and effectively improving preventive measures against leakage accidents and reducing safety risks during transportation.关键词
槽车泄漏/FLACS/数值模拟/LNG扩散/风险分析Key words
tank truck leak/FLACS/numerical simulation/LNG diffusion/risk analysis分类
资源环境引用本文复制引用
王涛,蒋文涛,盛禹淮,杨哲,罗振敏..LNG接收站槽车泄漏扩散规律FLACS模拟研究[J].西安科技大学学报,2026,46(1):71-80,10.基金项目
国家自然科学基金项目(52474250 （）
52174200),陕西省榆林市科技计划项目(CXY-2019-139) （CXY-2019-139）
