A separated two-phase flow analysis to study deflagration-to-detonation transition (DDT) in granulated propellant

Abstract

A two-phase reactive flow model is derived and solutions are applied to the analysis of the unsteady convective heat transfer in initially packed beds of granulated solid propellant or explosives. The resulting pressure wave and flame spreading event is considered the physical process that may provide for, deflagration-to-detonation transition (DDT) in such granulated beds. Discussions are included as to the appropriate constitutive laws required to complete the hydrodynamic model. The paper concludes with a brief assessment regarding both the limitations of the model and another possible DDT mechanism.