Free-convective regime of flame spread over a fuel film on a substrate |
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Authors: | A. A. Korzhavin A. V. V’yun N. A. Kakutkina I. G. Namyatov V. S. Babkin |
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Affiliation: | (1) Institute of Chemical Kinetics and Combustion, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090;(2) Siberian State Geodesic Academy, Novosibirsk, 630108 |
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Abstract: | Flame spread over a liquid fuel film on a thin metallic substrate under free convection was studied experimentally. Instantaneous flame velocities correlate with the flame length. The average flame velocity increases from 2 to 30–40 cm/sec with the slope angle of the substrate to the horizon varying in the range of 0–90°. For a substrate of specified width, the flame velocity is inversely proportional to the heat capacity of the unit area of the substrate-fuel system and to the differences between the temperature corresponding to the formation of a stoichiometric mixture of the saturated fuel vapor and air and the ambient temperature. __________ Translated from Fizika Goreniya i Vzryva, Vol. 43, No. 5, pp. 21–30, September–October, 2007. |
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Keywords: | combustion diffusion combustion combustion regimes convection fuel film |
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