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Parallels between the Regimes of Turbulent and Filtration Combustion of Gases in Inert Porous Media

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Abstract

The parallels between the turbulent and the filtration combustion of a gas in an inert medium have been considered. It is suggested that in the case where the thermal interaction between the gas and the porous medium is absent, elementary processes of mixing, chemical reaction, and others, which occur in turbulent and filtration combustion, can be characterized by similar dimensionless parameters setting up a correspondence between the integral scale of turbulence and the size of the pores. The dimensionless parameters have been analyzed and the diagram of the Borghi regimes of filtration combustion has been constructed. A number of typical cases of filtration combustion have been characterized using this diagram. It is shown that the considered cases of filtration combustion concern the range of distorted flames and distributed reaction zones according to the Borghi classification. From this it was assumed that the surface of filtration combustion in the first of the considered regimes is continuous in character. The formulas for estimating the rate of gas‐phase combustion under filtration conditions have been recommended.

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  1. National Academy of Sciences of Belarus, Academic Scientific Complex “A. V. Luikov Heat and Mass Transfer Institute,”, Minsk, Belarus

    K. V. Dobrego & A. D. Chornyi

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  1. K. V. Dobrego
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  2. A. D. Chornyi
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Dobrego, K.V., Chornyi, A.D. Parallels between the Regimes of Turbulent and Filtration Combustion of Gases in Inert Porous Media. Journal of Engineering Physics and Thermophysics 74, 581–590 (2001). https://doi.org/10.1023/A:1016791807624

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