Explosion mechanism of HMX dust within a tank and its comparative analysis of explosion characteristics with IPN mist

This study establishes a numerical model for dust flow and dust cloud explosion, elucidating the mechanisms underlying HMX dust cloud explosions and the variations in explosion parameters concerning concentration and particle size. Furthermore, it compares HMX dust's explosion parameters with IPN mist's. The findings can be a pivotal basis for the design of explosive compositions and accident prevention. As the concentration increases, both the maximum explosion pressure (P_max) and the maximum rate of pressure rise ((dP/dt)_max) of HMX dust undergo significant increases. As the particle size increases, P_max and (dP/dt)_max for HMX dust exhibit no significant variations. When the concentrations of HMX dust and IPN mist are 400 g/m³, there are no significant differences in their P_max and (dP/dt)_max. However, when the concentrations of HMX dust and IPN mist are 100 g/m³, the hazards of IPN mist are higher than those of HMX dust.