【作者】 毕昆； 蒋勇； 邱榕；

【Author】 BI Kun,JIANG Yong,QIU Rong (State Key Laboratory of Fire Science,University of Science and Technology of China,Hefei 230027,China)

【机构】 中国科学技术大学火灾科学国家重点实验室；

【摘要】 火灾场景重构能帮助调查员确定在某一特定空间内的火行为。将数值模拟中的大涡模拟方法应用于某汽车配件城仓库火灾场景重构,对火灾原因和过程进行分析。根据现场人员证词和燃烧现场取证,对火灾的发生进行场景重构模拟,确定火灾是由电气短路造成。将模拟结果中关键部位的温度、有毒气体和烟气浓度等数据与火灾现场专家勘察结果对比,排除了人为纵火的可能性。采用并行运算方法,较好的预测了火灾发展和有毒烟气的运动。为实际火灾场景的调查提供了数值模拟的科学方法。更多还原

【Abstract】 Fire scene reconstruction helps investigators identify the fire behavior in a specific space.Numerical simulation of storage fire by using large eddy simulation (LES) may provide insight on fire origin and process.Based on the evacuees’ description and the combustion evidence of the scene,reconstruction simulation was performed,the fire origin was induced by electric short-circuit.The possibility of arson fire was eliminated by comparing the temperature,toxic gas and soot density of simulation results of key parts with the fire site reconnaissance results.The simulation results demonstrated good prediction of fire development and smoke movement by adopting parallel operation.This article also provides application of fire simulation into actual fire scene investigation.更多还原