Numerical simulation of detonation afterburning processes.

A numerical simulation strategy was developed to examine the detailed afterburning processes in post-detonation flows and shock-droplet interactions. Reactants are modeled using the Murnaghan-type of equation of state (EOS) and multi-component gas products are modeled using Becker-Kistiakowsy-Wilson (BKW) EOS. This modeling approach marries a programmed burn algorithm, enabling detailed or simplified reaction kinetics to model afterburning and other post-detonation reaction processes. Methods to extend this programmed burn approach to incorporate non-detonative shock and reactive droplet interactions will be discussed. Nitromethane (NM) is modeled for this modeling approach, demonstrating the detonative burn of NM as well as shock-droplet interactions of vaporizing NM.