An Investigation of Gas Combustion in a Narrow Tube

Abstract

The specific features of combustion-wave propagation in a narrow tube have been studied experimentally in low-velocity regime for propane-air and hydrogen-air mixtures. For propane mixtures, an increase in the curvature of a flame surface correlates with the displacement of the laminar burning velocity maximum to the region of enriched mixtures. The combustion of lean hydrogen-air mixtures is accompanied by acoustic oscillations, which lead to a narrowing of the range of flame existence on combustible-gas flow rate. The rich hydrogen-air flames propagate steadily.

Keywords:

• quenching diameter
• excess enthalpy flame
• flammability limits
• flashback

Additional information

Notes on contributors

V.V. ZAMASHCHIKOV

Corresponding Author: E-mail: [email protected]