Features of dilute methane–oxygen flame front propagation towards combustible gas flow created by the fan

Experiments with dilute methane–oxygen mixtures at pressures of 100–200 Torr on the flame front propagation towards the flow of combustible gas created by a fan showed that both the mean flame velocity and the length of the ‘flame jump’ through a hole in a flat obstacle increase with increasing counter flow velocity; i.e., the flame accelerates towards the counter flow of combustible gas from the fan.