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JOURNALS // Fizika Goreniya i Vzryva // Archive

Fizika Goreniya i Vzryva, 2019 Volume 55, Issue 1, Pages 136–139 (Mi fgv564)

This article is cited in 3 papers

Urgent communication

On the effect of combustion inhibitors on the level of non-equilibrium radiation during ignition of hydrogen oxygen mixtures behind a shock wave

A. V. Eremina, M. R. Korshunovaab, E. Yu. Mikheyevaab

a Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, 125412, Russia
b Bauman Moscow State Technical University, Moscow, 105005, Russia

Abstract: The nonequilibrium radiation arising from the ignition of a $10\%$ stoichiometric hydrogen-oxygen mixture doped with combustion inhibitors and diluted with argon behind shock waves was studied. The addition of halogen-containing inhibitors led to increased UV radiation around the $220$ and $411$ nm wavelengths characteristic of the $\mathrm{HO}_2$ radical and $\mathrm{H}_2\mathrm{O}_2$ and $\mathrm{H}_2\mathrm{O}$ molecules, instead of the expected reduction in the super-equilibrium radiation of active radicals in the ignition zone. Therefore, the hypothesis about the inhibition mechanism due to extinguishing by the excited $\mathrm{H}\mathrm{O}_2^*$ radical is not confirmed, and the effect of inhibiting additives is due to the binding of $\mathrm{H}$ and $\mathrm{O}$ atoms.

Keywords: hydrogen ignition, inhibition, explosion safety, non-equilibrium radiation.

UDC: 544.45

Received: 12.07.2018

DOI: 10.15372/FGV20190114


 English version:
Combustion, Explosion and Shock Waves, 2019, 55:1, 121–124

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