Abstract
The effect of a relatively small addition of unsaturated gaseous hydrocarbon (propylene) on the detonation wave dynamics in a stoichiometric hydrogen–air mixture was studied by numerical simulation. The effect of the propylene concentration on the development of detonation in the mixture initiated directly by energy supply from outside in a small volume within a short time was studied at different initial temperatures of the mixture. A detailed hydrogen combustion mechanism and the key propylene hydrogenation reaction were used. Propylene is readily hydrogenated with the removal of atomic hydrogen from the reaction chain. This leads to an increase in the self-ignition delay of the mixture behind the leading shock wave, and at a sufficient concentration of the added inhibitor, to the breakdown of the cellular detonation structure and detonation degeneration.
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Translated from Fizika Goreniya i Vzryva, 2022, Vol. 58, No. 5, pp. 64-71.https://doi.org/10.15372/FGV20220508.
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Smirnov, N.N., Nikitin, V.F., Mikhal’chenko, E.V. et al. Inhibition of Developed Detonation of a Hydrogen–Air Mixture by a Small Addition of a Hydrocarbon Inhibitor. Combust Explos Shock Waves 58, 564–570 (2022). https://doi.org/10.1134/S0010508222050082
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DOI: https://doi.org/10.1134/S0010508222050082