Comparisons of Explosive Dispersal in Static, Supersonic, and High-Speed Conditions

Explosive dispersal is a challenging and rich topic of research in the multiphase flow community. Interesting questions arise when considering environments such as supersonic and hypersonic regimes. We simulate a dilute explosive dispersal in static, Mach 3 and 6 ambient conditions using an Eulerian-Lagrangian finite volume code. The explosive dispersal is simulated in an axisymmetric barrel with an exit into ambient conditions. A reactive burn model was used prior as the initial conditions of the explosive with the dilute particle bed in between the explosive and the barrel exit. For the non-static conditions, a bow shock is allowed to form over the barrel before the explosive is released.  Three virtual probe plates are simulated in three different locations downstream of the barrel exit to capture flow metrics. These plates capture the incipient flow properties at various times throughout the simulation.