Conclusions
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1.
A two-temperature adiabatic model of filtrational gas combustion has been investigated; the model takes account of molecular transfer in the gas phase and the finite width of the chemical reaction zone, thereby permitting a general analysis of the role of thermal interphase interaction, including the limiting cases. Using a modified extrapolational model, approximate relations have been obtained for determining the basic characteristics of the process.
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2.
The possibility that two cases of combustion — LVC and HVC — may be realized has been demonstrated. The parameter ranges corresponding to these two cases have been determined. The nonuniqueness region has been identified.
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3.
The possibility and conditions of realization of three types of flame propagation have been shown: combustion-wave motion in the direction of the combustion products, in the direction of the fresh gas, and in the direction opposite to that of the fresh gas, in particular, with zero filtration velocity.
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4.
The possibility of slowing of the reaction on account of internal thermal interactions leading to incomplete burnup in the region of maximum gas temperatures has been shown.
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Additional information
Novosibirsk. Translated from Fizika Goreniya i Vzryva, Vol. 20, No. 6, pp. 3–13, November–December, 1984.
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Laevskii, Y.M., Babkin, V.S., Drobyshevich, V.I. et al. Theory of filtrational combustion of gases. Combust Explos Shock Waves 20, 591–600 (1984). https://doi.org/10.1007/BF00757301
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DOI: https://doi.org/10.1007/BF00757301