氢气长管拖车隧道内泄漏扩散数值模拟研究  

Numerical simulation study of hydrogen gas long-tube trailer leakage diffusion in tunnels

作　　者：牛奕[1] 邓联滔 刘静雨 NIU Yi;DENG Liantao;LIU Jingyu(School of Safety Science and Emergency Management,Wuhan University of Technology,Wuhan Hubei 430070,China)

机构地区：[1]武汉理工大学安全科学与应急管理学院,湖北武汉430070

出　　处：《工业安全与环保》2025年第4期1-4,共4页Industrial Safety and Environmental Protection

基　　金：国家重点研发计划(2021YFB4000901)。

摘　　要：采用CFD流体仿真软件,以隧道内氢气长管拖车后舱内泄漏事故为对象,研究了氢气在隧道内的泄漏扩散特征。结果表明,在没有纵向通风时,隧道内会形成稳定的氢气浓度分层,氢气层的浓度和高度几乎不随时间变化;纵向风速可以降低隧道内泄漏氢气的爆炸危险性,当纵向风速达到9 m/s时,氢气可燃区域体积基本保持不变。This study investigates the leakage and diffusion characteristics of hydrogen in tunnels using CFD fluid simulation software,focusing on leakage accidents in the rear compartment of hydrogen long-tube trailers.The results show that,in the absence of longitudinal ventilation,a stable hydrogen concentration stratification is formed in the tunnel,and the concentration and height of the hydrogen layer hardly change with time;the longitudinal wind speed can reduce the explosion hazard of hydrogen leaking in the tunnel,and the volume of the combustible region of hydrogen is basically kept unchanged when the longitudinal wind speed reaches 9 m/s.

关 键 词：长管拖车 氢气泄漏 临界风速 数值模拟 

分 类 号：U45[建筑科学—桥梁与隧道工程]