Abstract
The existence of lean and rich concentration limits of the low-velocity regime of flame propagation was shown experimentally under filtration of a combustible gas mixture in narrow tubes. The values of the limits depend on the inner diameter of the tube. Experiments with an inhibitor affecting the concentration limits of combustion-wave propagation in tubes in a low-velocity regime showed that branching chain reactions occur in the filtration combustion wave and the concentrations of active centers thus exceed the equilibrium values. In the low-velocity regime, the surface of the narrow quartz tube slightly decreases the role of active centers in combustion-wave propagation.
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Zamashchikov, V.V., Bunev, V.A. Surface Effect on Branching Chain Reactions In Filtration Combustion of Gases. Combustion, Explosion, and Shock Waves 39, 431–436 (2003). https://doi.org/10.1023/A:1024734821521
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DOI: https://doi.org/10.1023/A:1024734821521