中文摘要：

使用FDS进行火灾场景模拟可以给火灾调查提供证据支持.对公交车火灾的数值模拟可以重现火灾现场,通过描述火源、公交车的结构以及可燃物的属性,可以重构火灾过程,解释火灾的发展、烟气的运动和人员的死亡.基于逃生人员和营救人员的描述,以及火灾现场的燃烧证据,采用并行运算方法进行了重构模拟.完成了包括热释放速率、温度场、烟气密度以及组分浓度等在内的多参数数据采集.通过比较模拟结果和火灾现场的调查结果,推测了火势的发展和烟气运动,解释了人员死亡的原因.从而为整个火灾重构的进一步研究打下基础,同时指出了火灾模拟在实际火灾场景调查中的应用价值.

英文摘要：

Fire scene simulation using fire dynamics simulator（FDS） may provide evidence for fire investigation.Numerical simulation of the bus fire may recur the fire scene,reconstruct fire processes and explain fire development,smoke movement and deaths by describing the fire source,configuration of the bus and property of fuel.Based on the descriptions of evacuees and rescuers,and the combustion evidence of the scene,reconstruction simulation was performed by adopting parallel operation.Multi-parameter measurement,including heat release rate（HRR）,temperature field,soot density and species concentration,was accomplished.The simulation results,compared with the fire site reconnaissance results,demonstrated good prediction of fire development and smoke movement and explained the causes of deaths.Furnishing a good foundation for further research into whole fire reconstruction and demonstrate the application of fire simulation to actual fire scene investigation.