Comparisons of Explosive Dispersal in Static and Supersonic Conditions

Explosive dispersal is a rich area of research in the multiphase flow community. When considering environments such as supersonic regimes for multiphase flow interesting questions can arise. We simulate an 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. The supersonic cases allow a bow shock to form over the barrel before the release of the explosive. The explosive's detonation is initialized with a reactive burn model prior to the start of the explosive dispersal simulations. Cases with the particle bed have it inserted flush with the barrel exit and the explosive detonation. Three different locations downstream of the barrel exit contain virtual probe plates to capture flow metrics. Incipient flow and particle properties at various times throughout the simulation are captured.