Abstract:
A mathematical model of the methane-air mixture combustion in a flat burner with an inert
body is presented. Gases in the top and lower parts of the flat burner exchange heat through the
inert body. The inert body serves as a regulator of the combustion. The mathematical model takes
into account gas thermal expansion and the dependence of diffusion, heat conductivity, and heat
exchange coefficients on temperature. The numerical solution was carried out in dimension variables and parameters.
It is shown that the combustion front is established in the top part of the flat burner. The range
of the 6% methane-air flow velocity for which the steady combustion mode is implemented is
determined. The dynamics of establishing the stationary combustion mode and flame failure is
presented. It is shown that the inert body provides a heat recovery, warming up of the mixtures in
the entrance part of the burner, and the mixture ignition.
Keywords:methane-air mixture, flat burner, heat expansion, steady gas mixture combustion.