通风条件对单侧开口室内火灾起火点偏移影响研究  

Numerical simulation on the effect of ventilation conditions on the ignition point offset of compartment fire with one side opening

作　　者：黄怡 加依达尔·包啦提 Huang Yi;Jiayidaer Baolati(Hunan Fire and Recuse Brigade,Hunan Changsha 410000,China;School of Safety Science and Emergency Management,Wuhan University of Technology,Hubei Wuhan 430070,China)

机构地区：[1]湖南省消防救援总队火调技术处,湖南长沙410000 [2]武汉理工大学安全科学与应急管理学院,湖北武汉430070

出　　处：《消防科学与技术》2023年第2期288-292,共5页Fire Science and Technology

摘　　要：以一起出现“起火点偏移”现象的单侧开口室内火灾为研究对象,利用FDS进行仿真,通过改变通风口数量和通风口位置,对比分析不同通风条件下火势蔓延发展、温度分布、火焰和烟气分布和热释放速率等的差异。结合火灾现场痕迹特征,探讨通风口数量和位置与单侧开口室内火灾发展蔓延及现场燃烧痕迹的关系,以及通风条件变化导致“起火点偏移”的原因,为类似场所火灾调查排除干扰痕迹,准确判定起火部位(点)提供参考。Using FDS,the paper studies the single-side open,indoor fire with the phenomenon of“fire point offset”,changing the number and location of air outlet parameters in simulation.It analyzed the differences of fire spread development,temperature distribution,flame and smoke distribution and HRR under different ventilation conditions.Based on the fire traces in the investigation,the paper discussed the relationship of air vents of number and location with fire spread development and burning patterns,and discussed the causes of"fire point offset"phenomenon.The results provides references as eliminating interference traces and accurately determining the fire location(point)for fire investigation in similar places.

关 键 词：通风条件 单侧开口 室内火灾 起火点 数值模拟 

分 类 号：X913.4[环境科学与工程—安全科学] X928.7