Convective combustion and weak detonation in solid fuels (Q1112675)

The spread of combustion in a solid fuel with longitudinal ducts is investigated. It is shown that the rate of combustion increases in that case by several orders of magnitude and depends substantially on the mechanism by which convective combustion spreads. The ignition of successive fuel layers can occur either directly, as a result of contact with hot reaction products flowing into a duct, or with the aid of a shock wave formed in the duct. The sequence of the phases of the process of convective combustion and its evolution to the regime of undercompressed (weak) detonation, are studied theoretically.