Numerical simulation of shock-dispersed fuel charges

The detonation products resulting from a chemical explosion are typically not completely oxidized and will bum if mixed with oxygen at sufficiently high temperature. In this paper we have presented a computational model for the afterburning of these detonation products based on a thermodynamic model developed by Kuhl. This model captures much of the thermodynamic and chemical behavior of the detonation products as they expand after detonation and provides a thermodynamically and chemically consistent model for their subsequent oxidation. The thermodynamic model is incorporated into a three-dimensional AMR algorithm and used to study the behavior of a composite TNT/PETN charge in a calorimeter. Additional work remains to account for temperature effects in our model, and to conduct further verification and validation through further comparisons with experimental data.