Modeling of Cellular Detonation in Gas Suspensions of Submicron Aluminum Particles with Different Distributions of Concentration
T. A. Khmel, S. A. Lavruk
Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
Keywords: gas suspension of aluminum particles, cellular detonation, heterogeneous mixture, numerical simulation
Abstract
Results of numerical simulation of two-dimensional flows of cellular detonation in plane channels in gas suspensions of submicron aluminum particles (0.6 and 0.3 m) in oxygen are presented. Mixtures with homogeneous and heterogeneous concentrations are considered. A previously developed model of reduced kinetics verified on the basis of the detonation velocity dependence on the particle concentration and extended to heterogeneous mixtures is used. The size and character of detonation cells are found as functions of the particle size and concentration. Problems of detonation propagation in channels with transverse concentration gradients and intermittent distributions of concentration are considered.
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