Two-phase reaction model of a gas-aluminum particles mixture detonation

The reaction model of aluminum particles is the key to successfully simulate the two-phase detonation of aluminum suspensions. In this study, by considering the decomposition of the aluminum oxide (Al2O3) product at high temperature, the reaction model for aluminum particles is improved and is incorporated into the numerical code. Then numerical simulations for two-phase detonations of Al/air mixtures and Al/O-2 mixtures are performed, respectively, the simulated results for the peak pressure and the speed of the two-phase detonation wave are in agreement with the experimental results, which demonstrate the validity of the improved aluminum reaction model. Moreover, the detonation parameters and the distributions of the physical quantities around the detonation wave are analyzed