Combustion Characteristics of a Pre-mixed Fuel Mixture in a Cylindrical Porous Layer with Axial Gas Feed
A. D. Moroshkina1,2, E. P. Dats2,3, E. V. Sereshchenko1, A. A. Ponomareva2,4, S. N. Mokrin2, S. S. Minaev1,2, V. V. Mislavsky1, V. V. Gubernov1
1Р. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia
2Far Eastern Federal University, Vladivostok, Russia
3Institute of Applied Mathematics, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
4ITMO University, St. Petersburg, Russia
Keywords: filtration combustion, radiative heat flux, numerical modeling
Abstract
The results of numerical modeling and experimental data related to combustion in a porous medium of a cylindrical burner with axial fuel feed are presented. The modeling of filtration combustion is performed within the framework of a two-temperature thermal diffusion model taking into account radiative heat exchange on the surfaces. The results of numerical modeling allow us to estimate the temperature distribution in the gas and in the porous layer, as well as the radiation fluxes inside and outside the cylindrical porous layer. The calculated results are in satisfactory agreement with the experimental data obtained during combustion of a propane-air mixture in a burner with a porous layer. The effect of external thermal insulation on the characteristics and efficiency of the burner is discussed.
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