主管:中华人民共和国应急管理部
主办:应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU

消防科学与技术 ›› 2020, Vol. 39 ›› Issue (11): 1486-1489.

• • 上一篇    下一篇

基于实验和FDS的回燃现象研究

姚斌1,2,3,4,朱国庆1,2,3,4,朱辉5,李明轩5,郭万海1,2,3,4   

  1. 1. 城市地下空间火灾防护江苏省高校重点实验室,江苏徐州221116;2. 中国矿业大学公共安全与消防研究所,江苏徐州221116;3. 中国矿业大学煤矿瓦斯与火灾防治教育部重点实验室,江苏徐州221116;4. 中国矿业大学安全工程学院,江苏徐州221116;5. 应急管理部四川消防研究所,四川成都610035
  • 出版日期:2020-11-15 发布日期:2020-11-15
  • 通讯作者: 朱国庆(1968-),男,中国矿业大学安全工程学院教授。
  • 作者简介:姚斌(1996-),男,甘肃平凉人,中国矿业大学安全工程学院硕士研究生,主要从事建筑火灾防护和性能化防火设计等方面的研究,江苏省徐州市泉山区大学路1 号,221116。
  • 基金资助:
    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)

Research on the phenomenon of backdraft based on experiment and FDS

YAO Bin1,2,3,4, ZHU Guo-qing1,2,3,4, ZHU Hui5,LI Ming-xuan5, GUO Wan-hai1,2,3,4   

  1. 1. Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, Jiangsu Xuzhou 221116, China;2. Institute of Public Safety and Fire Protection, China University of Mining and Technology, Jiangsu Xuzhou 221116, China;3. Key Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Jiangsu Xuzhou 221116, China ;4. Faculty of Safety Engineering, China University of Mining and Technology, Jiangsu Xuzhou 221116, China;5. Sichuan Fire Science and Technology Research Institute of MEM, Sichuan Chengdu 610035, China

  • Online:2020-11-15 Published:2020-11-15

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。

关键词: 回燃, 延迟时间, 温度变化, 开口时间, FDS 模拟

Abstract:

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.

Key words: backdraft, delay time, temperature change, opening time, FDS simulation