INTEGRATED DYNAMICAL MODEL OF FIRE FOR UNSTABILIZED BURNING OF TOLUENE

This article gives an analysis of the basic fire mathematical models: integral, zone and differential. The advantages and disadvantages of these models were considered. It was developed fire mathematical model, that determines the blocking escape routes of fire hazards in the workplace in terms of unsteady combustion mode of toluene. The analysis of additional equations and initial conditions of the fire model was carried out. Testing of a new fire model was carried out by numerical simulation experiments of exhaust mass flow smoke, temperature, partial densities of oxygen and carbon dioxide gas environment. Industrial building with circulation of toluene and three variants of the system smoke were used in the experiments. The analysis of the numerical experiment results has shown the possibility of selecting the optimum ventilation to improve the safe evacuation of people from the smoke area. The ways to further improve the model and its application were discussed.