关键词: 场景重构, 数值模拟, FDS, 火灾调查, 公交车火灾

Abstract: 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.

Key words: scene reconstruction, numerical simulation, FDS, fire investigation, bus fire