SIMULATION OF THE FLAME PROPAGATION IN A METHANE–AIR MIXTURE IN THE PRESENCE OF WATER AEROSOL

We have formulated a physicomathematical model of the fl ame propagation in a combustible gas containing water aerosol based on the thermal-diffusion model of the laminar fl ame propagation in a gas and taking into account the processes of heat and mass transfer between the phase and liquid drops. Computational-theoretical studies of the infl uence of water aerosol characteristics on the fl ame velocity in a lean methane–air mixture have been made. Comparison of the results of calculations with experimental data has shown that there is good agreement between them. Comparison of the effi ciency of using water aerosol and inert gas to stop the spread of fi re has shown that there exists a limiting size of the dispersed phase above which the effi ciency of using water aerosol and inert powders to stop the spread of fi re becomes equal
   
Author:  A. Yu. Krainov
Keywords:  combustible gas, water aerosol, fl ame front, computational modeling
Page:  104