Abstract:
Difference in the molar masses of a combustible gas and its combustion products has a strong effect on a flame temperature and a burning rate. Instead of a molar mass difference, one may consider a heat capacity difference at a constant pressure. There are two heat sources in a combustion zone. One of them is chemical, and the other one is similar to heat release (heat absorption) during a first-order phase transition, but, depending on the process, it can be partially chemical. The higher the heat capacity of the fuel in comparison with the heat capacity of the combustion products, the higher the burning rate and the flame temperature. For the physical completeness of the issue under discussion, an ideal thermodynamic cycle is considered, and it is shown that Carnot's formula should contain a correction factor that takes into account a change in heat capacity.
Citation:
K. O. Sabdenov, “Effect of molar mass variation on a flame temperature and a burning rate”, Fizika Goreniya i Vzryva, 57:1 (2021), 51–57; Combustion, Explosion and Shock Waves, 57:1 (2021), 46–52
\Bibitem{Sab21}
\by K.~O.~Sabdenov
\paper Effect of molar mass variation on a flame temperature and a burning rate
\jour Fizika Goreniya i Vzryva
\yr 2021
\vol 57
\issue 1
\pages 51--57
\mathnet{http://mi.mathnet.ru/fgv734}
\crossref{https://doi.org/10.15372/FGV20210105}
\elib{https://elibrary.ru/item.asp?id=44672988}
\transl
\jour Combustion, Explosion and Shock Waves
\yr 2021
\vol 57
\issue 1
\pages 46--52
\crossref{https://doi.org/10.1134/S0010508221010056}
Linking options:
https://www.mathnet.ru/eng/fgv734
https://www.mathnet.ru/eng/fgv/v57/i1/p51
This publication is cited in the following 5 articles:
K. G. Borovik, N. A. Lutsenko, S. S. Fetsov, E. A. Salgansky, “Simulation of gasification of a two-layer porous polymer in a low-temperature gas generator”, Combustion, Explosion and Shock Waves, 59:4 (2023), 432–439
E. A. Salgansky, N. A. Lutsenko, L. S. Yanovskii, “Simulation of gasification solid porous energy material in a low-temperature gas generator aircraft”, Combustion, Explosion and Shock Waves, 58:3 (2022), 312–317
K. O. Sabdenov, M. Erzada, A. T. Suleimenov, “A Simple Theory of Multicomponent Diffusion and Simulation of the Combustion of a Stoichiometric H2/O2 Mixture”, Tech. Phys., 67:2 (2022), 152
K. O. Sabdenov, “The thermodynamic Brayton cycle with a reversible chemical reaction”, Tech. Phys., 66:12 (2021), 1275–1283
K. O. Sabdenov, “Influence of chemical work on flame temperature and burning rate of a H2/O2/H2O mixture”, Combustion, Explosion and Shock Waves, 57:2 (2021), 171–181
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