Abstract
The possibility of increasing the laminar flame velocity in a hydrogen-air mixture by excitation of O2 molecules into the a 1Δ g singlet state. The presence of 10% of O2(a 1Δ g ) molecules in oxygen is demonstrated to result in noticeable (up to 50%) enhancement of mixture burning. The temperature of combustion products and also the concentrations of H2O, NO, and other constituents increase. The greatest effect of O2(a 1Δ g ) molecules is manifested in combustion of lean mixtures; the least pronounced effect is observed in rich mixtures. These effects are caused by intensification of the chain mechanism in the presence of a super-equilibrium amount of excited O2(a 1Δ g ) molecules in a hydrogen-air mixture.
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Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 4, pp. 3–12, July–August, 2008.
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Kozlov, V.E., Starik, A.M. & Titova, N.S. Enhancement of combustion of a hydrogen-air mixture by excitation of O2 molecules to the a 1Δ g state. Combust Explos Shock Waves 44, 371–379 (2008). https://doi.org/10.1007/s10573-008-0062-5
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DOI: https://doi.org/10.1007/s10573-008-0062-5