Transmission of a detonation wave across an inert layer

The transmission of a detonation wave across layer inert gas is studied via one- and two-dimensional numerical simulations based on the reactive Euler equations. resulting transient process from one-dimensional first explored in detail, analyzed distance-time characteristic diagrams. physics this same until end quasi-steady period. Afterward, energy release combustion may couple to dynamics. Through coupling, pressure pulse accompanying can be rapidly amplified, consequently, leads onset. If too thick, cannot successfully re-initiated downstream. This inert-layer thickness beyond which fails determined as critical thickness, ?i,cr. mechanisms underlying scenarios with successful unsuccessful re-initiation are demonstrated detail. A parametric study considering simplified detailed chemical kinetics (i.e., stoichiometric mixture hydrogen air at various initial 0.1?1atm) demonstrate that ?i,cr normalized by intrinsic ZND induction length, ?I, asymptotically decreases an increase effective activation energy, Ea. under-predict experimental results [1, 2] ?i,cr/?I least one order magnitude. In scenarios, transverse-wave instabilities present allow re-initiate cases where dimension. closer agreement findings.