Abstract
Numerical modeling of the propagation of shock and detonation waves is carried out in a duct with an abrupt expansion for a heterogeneous mixture of fine particles of aluminum and oxygen. A considerable difference from corresponding flows in pure gas is found. The influence of the size and mass loading of particles on the flow and shock wave structure behind the backward-facing step is determined. As in gaseous detonations, three types of scenarios of detonation development are obtained. Specific features of the flow structure are revealed such as deformation of the combustion front due to interaction between the relaxation zone and the vortex structure. The influence of particle size and channel width on detonation propagation is analyzed.
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Communicated by L. Bauwens.
This paper is based on work that was presented at the 21th International Colloquium on the Dynamics of Explosions and Reactive Systems, Poitiers, France, July 23–27, 2007.
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Fedorov, A.V., Khmel, T.A. & Kratova, Y.V. Shock and detonation wave diffraction at a sudden expansion in gas–particle mixtures. Shock Waves 18, 281–290 (2008). https://doi.org/10.1007/s00193-008-0162-x
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DOI: https://doi.org/10.1007/s00193-008-0162-x