公路隧道内氢气和丙烷爆炸数值模拟对比分析  

Comparative numerical simulation analysis on explosion of hydrogen and propane in highway tunnel

作　　者：陈长坤[1] 雷鹏[2] 史聪灵[3] 赵小龙[1] 刘晅亚 陈杰[1] 

机构地区：[1]中南大学防灾科学与安全技术研究所,湖南长沙410075 [2]中南大学资源与安全工程学院,湖南长沙410083 [3]中国安全生产科学研究院地铁火灾与客流疏运安全北京市重点实验室,北京100012 [4]建筑消防工程技术公安部重点实验室,天津300381

出　　处：《中国安全生产科学技术》2017年第1期151-155,共5页Journal of Safety Science and Technology

基　　金：国家自然科学基金项目(51576212;51622403);国家重点研发计划课题(2016YFC0802501);建筑消防工程技术公安部重点实验室开放课题(KFKT2014ZD02)

摘　　要：通过FLUENT软件对化学计量浓度下的等热当量的氢气和丙烷在某公路隧道内的爆炸过程进行了数值模拟,对比分析了2者的反应速率和隧道内的压力场变化。结果表明:隧道内爆炸过程中氢气反应速率比丙烷的快,爆炸发生后50 ms内的平均反应速率是丙烷的7倍;氢气爆炸产生的超压较大,最大可达451 k Pa,爆炸产生的压力波迅速传播,在隧道内上下来回反射,强度逐渐减弱;丙烷爆炸产生的压力波在隧道内整体表现为向上传播,在爆炸发生150 ms内强度逐渐增大。在此种情况下,2种气体的爆炸均能够对隧道内人员造成严重伤害。The numerical simulation on explosion processes of hydrogen and propane with the equal thermal equivalent under the stoichiometric concentration in a highway tunnel were carried out by using FLUENT,and both the reaction rates and the pressure field change in the tunnel were compared. The results showed that during the explosion process in the tunnel,the reaction rate of hydrogen is higher than that of propane,and the average reaction rate within 50 ms after explosion is 7 times as that of propane. The overpressure produced by hydrogen explosion is larger,with the maximum value of 451 k Pa,and the pressure waves spread quickly and reflect from top to bottom,with a gradually weakening intensity. The pressure waves produced by propane explosion spreads upwards in the tunnel on the whole,and the intensity increases gradually within 150 ms after explosion. Under this circumstance,both the hydrogen and propane explosion can cause serious damage to personnel in tunnel.

关 键 词：公路隧道 气体爆炸 数值模拟 对比分析 

分 类 号：X932[环境科学与工程—安全科学]