Validation of Enclosure Fire Model in Integral form Using an Inverse Approach

This paper presents a new methodology of estimating the mass flow rate of gases flowing outward from room, the mass flow rate of the outer air entering a room and the rate of combustible material gasification in building based on solving the problem of inverse enclosure fire dynamics in an integral form and validation of this model. The approach is based on an approximation of dependence on the combustion completeness of the mass flow rate of the outer air entering room and of the rate of combustible material gasification and then on solving a quadratic equation with respect to the mass flow rate of the outer air entering a room. The simulation results of the problem of inverse fire dynamics in integral form are cited. As an example of the practical application of the proposed approach, the problem of identification of a combustible material is considered. The obtained results are an important step towards the development of fire reconnaissance systems, which, for example, are able to lead the robotic reconnaissance.