Abstract:

In order to reconstruct the fire development process of an electric bicycle fire and analyze the cause of casualties, according to the actual situation of the fire scene, the fire building model was built by using PyroSim and other software. Controllers were set for numerical simulation to obtain the fire spread velocity of the building, temperature and carbon monoxide concentration in the room of the dead. The fire development at the point of origin and the key position were verified by comparison with the fire scene photographs. Combining the slices from three angles of temperature, death was caused by the combination of high temperature and carbon monoxide was confirmed by carbon monoxide concentration and FED data. This research makes a reasonable explanation for the death cause, and provides basis for fire investigation. 

Key words:  fire investigation, numerical simulation, PyroSim, electric bicycle fires