APPLICATION OF THE CREST REACTIVE BURN MODEL TO TWO-DIMENSIONAL PBX 9502 EXPLOSIVE EXPERIMENTS

CREST is a new reactive burn model that uses entropy‐dependent reaction rates to model shock initiation and detonation behaviour in plastic bonded explosives. To date the model has been successfully applied to a wide range of one‐dimensional shock initiation data obtained from explosive gas‐gun experiments. In this paper, to provide a more rigorous test of CREST's predictive capability, the model is applied to two‐dimensional explosive detonation propagation experiments. The calculated results show that the CREST reaction rate model, fitted only to one‐dimensional data of the shock to detonation transition, can accurately simulate two‐dimensional explosive data from detonation experiments. This gives confidence in the ability of the model to accurately predict a wide range of shock initiation and detonation phenomena.