Abstract:
Formation of cellular detonation in polydisperse suspensions of fine aluminum particles in oxygen is studied by methods of numerical modeling. The influence of the particle size distribution on the character and scale of cellular structures is analyzed. The transition of plane to cellular detonation is modeled by two methods: development of small perturbations on the front and passing of the detonation front through a discontinuity of the channel cross section. The character of the cellular structures is independent of the method of their formation and displays signs of degeneration in polydisperse mixtures. As the scatter in the particle size increases, cellular detonation transforms to plane detonation. Stable propagation of a plane detonation wave is observed in mixtures with significant differences in the particle size. The critical share of the dominating fraction for complete degeneration in suspensions with three and five fractions of particles is identical.
Citation:
Yu. V. Kratova, A. V. Fedorov, T. A. Khmel, “Specific features of cellular detonation in polydisperse suspensions of aluminum particles in a gas”, Fizika Goreniya i Vzryva, 47:5 (2011), 85–94; Combustion, Explosion and Shock Waves, 47:5 (2011), 572–580
\Bibitem{KraFedKhm11}
\by Yu.~V.~Kratova, A.~V.~Fedorov, T.~A.~Khmel
\paper Specific features of cellular detonation in polydisperse suspensions of aluminum particles in a gas
\jour Fizika Goreniya i Vzryva
\yr 2011
\vol 47
\issue 5
\pages 85--94
\mathnet{http://mi.mathnet.ru/fgv1130}
\elib{https://elibrary.ru/item.asp?id=17283630}
\transl
\jour Combustion, Explosion and Shock Waves
\yr 2011
\vol 47
\issue 5
\pages 572--580
\crossref{https://doi.org/10.1134/S001050821105011X}
Linking options:
https://www.mathnet.ru/eng/fgv1130
https://www.mathnet.ru/eng/fgv/v47/i5/p85
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S. A. Lavruk, A. V. Fedorov, T. A. Khmel, “Cellular detonation propagation and degeneration in bi-disperse gas suspensions of micron- and nano-sized aluminum particles”, Shock Waves, 30:3 (2020), 273
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Kei Shimura, Akiko Matsuo, “Using an extended CFD–DEM for the two-dimensional simulation of shock-induced layered coal-dust combustion in a narrow channel”, Proceedings of the Combustion Institute, 37:3 (2019), 3677
T A Khmel, S A Lavruk, “Modeling the detonation propagation in nanodisperse mixture of aluminum particles in channels with expansion”, J. Phys.: Conf. Ser., 1128 (2018), 012079
A. V. Fedorov, T. A. Khmel, Yu. V. Kratova, AIP Conference Proceedings, 1893, 2017, 030049
A V Fedorov, T A Khmel, S A Lavruk, “Modeling of detonation propagation in expansion channel in bidisperse mixture”, J. Phys.: Conf. Ser., 894 (2017), 012049
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