Abstract
The effect of the velocity of forced oxidizer flow on the pattern and velocity of flame spread over a fuel film was experimentally studied, and the limiting conditions of steady-state flame propagation were determined. New experimental evidence was obtained for the validity of the previously proposed model of flame propagation in a thermally thin system. It was found that, in a thermally thin system at a certain value of the gas flow velocity, laminar flame propagation is followed by spin flame propagation in a narrow range of gas flow velocities, and then by quenching. In the laminar layer-by-layer propagation regime, the flame velocity does not depend on the average velocity of the opposed gas flow. The proposed model for the laminar layerby-layer flame propagation agrees with experiment taking into account the fuel film flow under the action of the Marangoni effect due to the condensed-phase temperature gradient.
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Translated from Fizika Goreniya i Vzryva, Vol. 46, No. 3, pp. 37–43, May–June, 2010.
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Korzhavin, A.A., Kakutkina, N.A. & Namyatov, I.G. Flame spread over fuel films in opposed gas flow. Combust Explos Shock Waves 46, 273–278 (2010). https://doi.org/10.1007/s10573-010-0038-0
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DOI: https://doi.org/10.1007/s10573-010-0038-0