Two-dimensional numerical simulation of deflagration-to-detonation transition for a porous explosive using a model of a multivelocity heterogeneous medium

The model of a multivelocity heterogeneous medium is used for one- and two-dimensional numerical calculations of the deflagration-to-detonation transition for charges of a porous explosive enclosed in a casing. Calculation results are compared with experimental data. Depending on the charge diameter, different explosion regimes — detonation and low-velocity explosive transformation — are registered in both the two-dimensional calculations and experiments. Translated fromFizika Goreniya i Vzryva, Vol. 36, No. 3, pp. 97–106, May–June, 2000.