Fire behaviour modelling of polypropylene under autoignition conditions

Fire behaviour modelling of solid fuel is the key to the success of a computational fluid dynamics (CFD) tool. Fire behaviour modelling of polypropylene (PP) under autoignition conditions was taken and validated by cone calorimeter experiments. Modelling considered both solid and gas phases, such as pyrolysis reactions, melting processes, gas and liquid transportation, in-depth radiation and gas phase combustion. It was known from both experiments and numerical modelling that the mass loss of PP samples is quite following typical noncharring polymers with three mass loss stages, namely a sharply increasing mass loss rate of ignition stage, a stably increasing period of molten stage, and finally a peak with boiling liquid state