Abstract
Propagation of a plane detonation wave in a stoichiometric mixture of a gas and aluminum particles in a plane channel with a linear expansion section is studied by methods of numerical simulation. The slope of the wall is varied from 15 to 60°. The basic regimes of detonation propagation are analyzed: supercritical (without detonation failure), critical (with partial failure and re-initiation), and subcritical (with complete separation of the shock front and combustion front and with detonation failure). The detonation configuration formed in the expanding section can be a cellular structure with large differences in cell sizes at large angles of expansion or a close-to-uniform structure at the wall angle of 15°.
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Original Russian Text © A.V. Fedorov, T.A. Khmel’, S.A. Lavruk.
Published in Fizika Goreniya i Vzryva, Vol. 53, No. 5, pp. 104–114, September–October, 2017.
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Fedorov, A.V., Khmel’, T.A. & Lavruk, S.A. Exit of a heterogeneous detonation wave into a channel with linear expansion. I. Propagation regimes. Combust Explos Shock Waves 53, 585–595 (2017). https://doi.org/10.1134/S0010508217050136
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DOI: https://doi.org/10.1134/S0010508217050136