This work is concerned with the effect of cavity collapse in non-ideal explo- sives as a means of controlling their sensitivity. To this end we perform resolved numerical simulations of a single cavity collapsing in liquid nitromethane, using a multi-phase for- mulation which can account for the large density difference across the material interface without generating spurious temperature peaks. The model is validated against experimen- tal and analytic data. The analysis of the results is focused on the effect of the collapse on the temperature field and the subsequent formation of hot spots. We observe that hot spots are formed at the regions directly in front and behind the collapsed cavity, as well as in the Mach stem region formed by superposition of shock waves.
展开▼
