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Journal of Applied Mechanics and Technical Physics

2018 year, number 5

HYSICOCHEMICAL PROCESSES IN THE INTERACTION OF AEROSOL WITH THE COMBUSTION FRONT OF FOREST FUEL MATERIALS

I. S. Voitkov1, R. S. Volkov1, A. O. Zhdanova1, G. V. Kuznetsov1, V. E. Nakoryakov2
1National Research Tomsk Polytechnic University University, Tomsk, 634050, Russia
2Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
Keywords: аэрозоль, лесной горючий материал, фронт горения, прекращение горения, термическое разложение, пламенное горение, aerosol, forest fuel material, combustion front, burningstop, evaporation, thermal decomposition, flaming combustion

Abstract

An experimental study has been performed to investigate the integral characteristics of the processes of heat and mass transfer and phase transformations during interaction of a droplet flow with the combustion front of a highly porous condensed material. The macroscopic regularities of the suppression of flaming combustion and thermal decomposition of typical forest fuel material due to the removal of heat as a result of its absorption during vaporization and convective cooling were studied. Three versions of interaction of a droplet aerosol with burning forest fuel material were considered. The time of combustion termination and the time of thermal decomposition of forest fuel materials were determined. The mechanisms of the main physicochemical processes occurring during interaction of droplet flow with the combustion front of typical forest fuel materials were established.