Influence of interphase heat transfer on the critical conditions of shock-wave initiation of chemical reaction in porous energetic materials

This paper presents the results of numerical analysis of a viscoplastic model of the formation of hot spots based on the solid-phase mechanism of hot-spot ignition of an energetic porous material under shock-wave loading. The highly viscous pore collapse is considered, which is of great interest in the theoretical study of shock-wave initiation of heterogeneous energetic materials. Interphase heat transfer was described under the assumption that the gas is ideal and hence the uniform pressure condition can be used. Parametric analysis was conducted, and the specific features of the effect of heat transfer and interphase heat transfer on the critical conditions of shock-wave initiation of chemical reaction in the energetic porous material were determined.