Modeling of Cellular Detonation in Gas Suspensions of Submicron Aluminum Particles with Different Distributions of Concentration

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 mu m) in oxygen are presented. Mixtures with uniform and nonuniform 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 mixtures with nonuniform concentrations 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.