Near-field blast phenomenology of thermobaric explosions

Depending on charge parameters, the near-field blast flow from multi-phase explosives can exhibit a wide range of wave-dynamic and hydrodynamic behaviour, including the development of jetting and previously unidentified transient interfaces. Jetting from the fireball is consistently observed in many experiments and may be a key mechanism controlling particle combustion, yet is not reproduced by CFD modelling when particle/particle interactions are neglected. Although not explicitly including the necessary physics for jetting, multi-phase explosion modelling was used to investigate the early blast-wave flow for a range of charge types to identify what controls particle distributions, including the conditions which may lead to jetting observed in reality.