Abstract
At present, the CFD method of fire modelling is a useful and the most detailed tool for the fire safety analysis. In this paper the CFD modelling of real experimental fire in a garage compartment and its gaseous extinguishing are described. The numerical model is based on the three-dimensional incompressible Navier-Stokes equation set, K-E turbulence model with wall functions, Eddy Break-Up combustion model. The radiation heat transfer was taken into account as a heat sink term. The extinguishing was modelled by means of simple and reliable phenomenological model based on the value of flame extinguishing concentration of suppression agent. The application of extinguishing model allowed to describe the process of fire suppression, including behavior of heat release rate and time of extinguishing. The detailed information about distribution of suppressant concentration, which generally depends on temperature and velocity fields in compartment, was obtained during numerical simulation. The solution obtained was compared with available analytical and experimental data.
© 2000 Center for Fire Science and Technology, Research Institute for Science and Technology, Tokyo University of Science
