Detonation propagation in stratified reactant layers

Abstract

A numerical investigation of detonation propagation in stratified reactant layers is presented in this paper. It is baesed on the reactive Euler equations using a two step chemical kinetics approach. The numerical simulations are based on the reactive Euler equations. Turbulence is solved with a one equation model, and the chemical kinetics is modeled as a two steps. The first step is an induction time step, and the second step is an exothermic step. The numerical setup is scaled to keep the numerical resolution of the induction zone constant to 10 cells. Initial simulations were conducted to generate detonation structures in homogeneous reactants and with cyclic boundary conditions. The developed structures were mapped into a domain with a stratified reactant layer on top of a inert layer. The results show that the detonations fail to propagate as the triple points of the propagating detonation is "lost" into the inert layer.