A numerical investigation of transient detonation in granulated material
A two-phase model based upon principles of continuum mixture theory is numerically solved to predict the evolution of detonation in a granulated reactive material. Shock to detonation transition (SDT) is considered whereby combustion is initiated due to compression of the material by a moving piston. In particular, this study demonstrates the existence of a SDT event which gives rise to a steady two-phase Chapman-Jouguet detonation structure consisting of a single lead shock in the gas and an unshocked solid. The unsteady model equations, which constitute a non-strictly hyperbolic system, are numerically solved using modern high-resolution method based on Godunov's method and on an approximate solution for the two-phase Riemann problem.
scientific article; zbMATH DE number 952347
scientific article