摘要
设置火源功率为20 MW的公交车起火的火灾场景,利用FDS模拟的方法对比分析有、无空气幕时隧道内火灾烟气蔓延情况,包括烟气浓度、温度、能见度和流速等参数的变化,研究空气幕对隧道火灾烟气蔓延特性的影响。结果表明,火源两侧设有出口射流方向朝下、射流速度为15 m/s的空气幕时,火灾烟气可较好地受控于这两个空气幕形成的区域内。
In order to study the influence of air curtain on the tunnel fire smoke spread characteristic,the numerical simulation of the tunnel fire smoke spreading was conducted by FDS.The difference of the smoke spread characteristics of tunnel fire in the presence of set up air curtain was contrasted with the 20MW fire source of a bus fire,including the change of parameters such as smoke concentration,temperature,visibility and flow rate.The results showed that the set up air curtain with the condition of downward jet direction and 15m/s jet speed in the tunnel could effectively prevent the spread of the tunnel fire smoke.
出处
《消防科学与技术》
CAS
北大核心
2017年第1期44-46,60,共4页
Fire Science and Technology
基金
国家"十三五"科技支撑计划项目(2016YFC0800603)及子课题"城市交通隧道防排烟关键技术研究"(2016YFC080060304)
公安部四川消防研究所基本科研业务专项(20168813Z)
