Abstract:
The initiation of detonation in a vacuum suspension of volatile secondary explosives is studied numerically. A mathematical model of a two-phase, two-velocity medium takes into account the nonuniform temperature inside the particles as the gas flows around them. The formation dynamics of the reaction zone of a nonstationary detonation wave with a collisionless structure in a vacuum suspension of RDX particles is discussed. The critical size of the initiation region and of the energies for excitation of plane, cylindrical, and spherical detonations are determined as functions of the initial mass concentration and diameter of the particles.
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