Experimental investigation of gas combustion regularities in narrow tubes

Combustion wave propagation in flowing combustible gas has been studied experimentally in tubes with inner diameters larger and smaller than the critical diameters. Combustion wave velocity has been shown to depend on the material of the tube walls, the tube inner diameter, the mixture composition, and the gas flow rate. In a tube which has an inner diameter larger than the critical diameter, two flame-propagation regimes exist.