Abstract
The effect of polydispersity on formation of heterogeneous cellular detonation in gas suspensions of aluminum particles in oxygen is studied by means of numerical simulations and an acoustic analysis. The influence of the suspension composition on the character and size of the cellular structures being formed is found. Partial (and sometimes complete) degeneration of cellular detonation in bidisperse suspensions into a plane detonation wave is observed. Numerical predictions agree with the results of the acoustic analysis of steady detonation structures in bidisperse suspensions. A similar analysis performed for mixtures containing three and five fractions predicts difficulties in formation of cellular detonation in the case of a large scatter in the particle size.
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