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Fizika Goreniya i Vzryva, 2018, Volume 54, Issue 6, Pages 59–67
DOI: https://doi.org/10.15372/FGV20180607
(Mi fgv945)
 

Influence of the strain rate, particle size, and equivalence ratio on the combustion of the premixed air–aluminum microparticle mixture with a counterflow structure

Ya. Pourmohammad, M. Sabzpooshani

University of Kashan, Kashan, 8731751167, I.R., Iran
Abstract: The effects of the strain rate, equivalence ratio, and particle diameter on the combustion of a mixture of aluminum microparticles with air under fuel-lean conditions are studied in the counterflow configuration with an approximate analytical perturbation method. The flame structure is assumed to consist of three zones: preheating, flame, and post-flame zones. Reasonable agreement between the current results and experimental data is obtained in terms of the flame temperature. The dimensionless ignition and ultimate flame temperatures, place of the flame starting point, and flame thickness are obtained as functions of the strain rate for different particle diameters and equivalent ratios. The results indicate that the ignition and ultimate flame temperatures and also the flame thickness decrease with increasing strain rate. With a decrease in the strain rate, the length of the preheating zone increases. With increasing particle diameter, the flame thickness increases, whereas the ignition and ultimate flame temperatures decrease. An increase in the equivalence ratio causes an increase in the ultimate flame temperature and reduction of the preheating zone and flame thickness.
Keywords: metal particles, aluminum microparticles, counterflow combustion, strain rate, premixed mixture.
Funding agency Grant number
University of Kashan 3224127/6
Received: 20.09.2017
Revised: 20.02.2018
English version:
Combustion, Explosion and Shock Waves, 2018, Volume 54, Issue 6, Pages 681–688
DOI: https://doi.org/10.1134/S0010508218060072
Bibliographic databases:
Document Type: Article
UDC: 536.46
Language: Russian
Citation: Ya. Pourmohammad, M. Sabzpooshani, “Influence of the strain rate, particle size, and equivalence ratio on the combustion of the premixed air–aluminum microparticle mixture with a counterflow structure”, Fizika Goreniya i Vzryva, 54:6 (2018), 59–67; Combustion, Explosion and Shock Waves, 54:6 (2018), 681–688
Citation in format AMSBIB
\Bibitem{PouSab18}
\by Ya.~Pourmohammad, M.~Sabzpooshani
\paper Influence of the strain rate, particle size, and equivalence ratio on the combustion of the premixed air--aluminum microparticle mixture with a counterflow structure
\jour Fizika Goreniya i Vzryva
\yr 2018
\vol 54
\issue 6
\pages 59--67
\mathnet{http://mi.mathnet.ru/fgv945}
\crossref{https://doi.org/10.15372/FGV20180607}
\elib{https://elibrary.ru/item.asp?id=36457272}
\transl
\jour Combustion, Explosion and Shock Waves
\yr 2018
\vol 54
\issue 6
\pages 681--688
\crossref{https://doi.org/10.1134/S0010508218060072}
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