Numerical simulation for the propagation and action of shock waves during explosive synthesis

Abstract

The paper presents numerical and experimental studying the behavior of porous reactive mixtures (Al/S, Al/Tf and Al/Tf/C) under explosive loading using a multicomponent medium model. The initial dispersion of reactive mixtures is varied to evaluate its contribution to the development of chemical reactions. The results have shown that the shock wave, reflected from the bottom of the ampoule in the form of a compression wave, encounters the shock wave propagating in the sample, which leads to a sharp increase in the pressure and the rate of chemical reactions at the bottom of the sample. The high rate of heat release and the sharp increase in pressure lead to the ampoule fracture. It is found that the higher the initial dispersion of the mixture components is, the more intensive the development of chemical reactions and the ampoule fracture are.