摘要
对以木材为燃料的全尺寸腔室火灾回燃现象进行研究,展现了真实场景下的回燃现象并分析了回燃延迟时间及室内温度变化。运用FDS软件对实验进行模拟,模拟结果表明回燃发生时喷出开口的火焰形态及室内温度变化趋势和实际实验基本一致;在此基础上运用FDS分别研究了封闭腔室大开口和小开口情况下不同开口时间对回燃的影响。
The fire backdraft phenomenon of a full-size chamber using wood as fuel was studied,showing the backdraft phenomenon in a real scene and analyzing the backdraft delay time and indoor temperature changes.FDS was used to simulate the experiment.The simulation results show that the flame shape and indoor temperature change trend of the spray opening when backdraft occurs are basically the same as the actual experiment.On this basis,FDS was used to study the effect of different opening times on backdraft in the closed chamber with large opening and small opening.
作者
姚斌
朱国庆
朱辉
李明轩
郭万海
YAO Bin;ZHU Guo-qing;ZHU Hui;LI Ming-xuan;GUO Wan-hai(Jiangsu Key Laboratory of Fire Safety in Urban Underground Space,Jiangsu Xuzhou 221116,China;Institute of Public Safety and Fire Protection,China University of Mining and Technology,Jiangsu Xuzhou 221116,China;Key Laboratory of Gas and Fire Control for Coal Mines,China University of Mining and Technology,Jiangsu Xuzhou 221116,China;Faculty of Safety Engineering,China University of Mining and Technology,Jiangsu Xuzhou 221116,China;Sichuan Fire Science and Technology Research Institute of MEM,Sichuan Chengdu 610035,China)
出处
《消防科学与技术》
CAS
北大核心
2020年第11期1486-1489,共4页
Fire Science and Technology
基金
国家重点研发计划项目“公共安全风险防控与应急技术装备重点专项”(2016YFC0802900)
关键词
回燃
延迟时间
温度变化
开口时间
FDS模拟
backdraft
delay time
temperature change
opening time
FDS simulation
