Distinctive Features of Propagation of the Flame of a Coal–Methane–Air Mixture in a Cylindrical Channel

A two-dimensional axisymmetric model of combustion of a coal–methane–air mixture has been constructed with the approaches of the dynamics of two-phase reactive media. Numerical investigation into the regularities of propagation of the combustion front in a cylindrical channel has been performed. The influence of the radius and mass concentration of coal-dust particles on the velocity of propagation of the flame was shown. The acceleration of the flame on reaching the channel’s lateral walls by the combustion front was demonstrated. The difference in flame velocities was shown in the cases of open and closed right ends of the channel.