#6482. Transmission of a detonation wave across an inert layer

October 2026publication date
Proposal available till 10-05-2025
4 total number of authors per manuscript0 $

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Journal’s subject area:
Physics and Astronomy (all);
Chemical Engineering (all);
Chemistry (all);
Energy Engineering and Power Technology;
Fuel Technology;
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Abstract:
The transmission of a detonation wave across a layer of inert gas is studied via one- and two-dimensional numerical simulations based on the reactive Euler equations. The resulting transient transmission process from the one-dimensional simulations is first explored in detail, and is analyzed via distance-time characteristic diagrams. The physics of this transient process is the same until the end of a quasi-steady period. Afterward, the energy release from the combustion may couple to the gas dynamics. Through this coupling, the pressure pulse accompanying the energy release can be rapidly amplified, and consequently, leads to detonation onset. If the inert layer is too thick, the detonation cannot be successfully re-initiated downstream. This inert-layer thickness beyond which a detonation fails to be re-initiated is determined as the critical thickness. The mechanisms underlying the scenarios with a successful and unsuccessful re-initiation are demonstrated in detail.
Keywords:
Detonation onset; Detonation transmission; Inert layer; Numerical simulation

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