Abstract
A simple model of the fast convective waves in porous high explosives (HE) is proposed. The movement of the solid phase is neglected, and only gas phase equations are considered. The burning solid grains supply the gas influx into the pore space and produce considerable drag for the gas flow. Under realistic assumptions, the combustion zone is shown to be approximately isothermal. As a result, the energy equation can be avoided and the analysis becomes much simpler. The existence of stationary Chapman-Jouget waves is shown. The Chapman-Jouget condition involves the isothermal sound velocity. Results agree qualitatively with the experimental data. The model is interesting as a limiting case of nonideal detonation with high momentum losses.
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