Cellular modes of filtration combustion

The dynamic laws of filtration combustion are determined by the macrokinetic laws of exothermic chemical reactions in porous media. The local reaction rate depends on the concentration of reagents and exponentially on the temperature according to Arrhenius' law. Depending on the transport conditions for the active gas reagent entry into the cell and the heat loss in the medium, the cell can grow and divide or, on the contrary, decrease and disappear. According to the law of conservation of energy, the temperature is controlled by the heat exchange process in the reacting medium with taking into account the chemical reaction heat release and the heat exchange with the environment. The combustion process was initiated near one boat edge by a spiral made of a 0.7-mm chromel wire with a ceramic core of 3 mm in diameter. The leads of the spiral were isolated from the boat by ceramic straws with an external diameter of 2 mm and the channel diameter equal to the wire diameter.