Structure and propagation of Chapman~--- Jouget waves in a hydrogen-oxygen mixture with aluminium particles

T. A. Khmel ; S. A. Lavruk

Čelâbinskij fiziko-matematičeskij žurnal, Tome 8 (2023) no. 4, pp. 580-593.

Résumé

The processes of formation and propagation of hybrid detonation plane waves in hydrogen-oxygen-argon mixtures with aluminum particles ranging in size from $3.5~\mu$m to $13~\mu$m with various loadings are numerically simulated. A physical and mathematical model of the reduced kinetics of hydrogen and aluminum combustion is used, taking into account the formation of solid oxide and gaseous suboxides. A stabilizing effect of aluminum particles on the flow, an increase in the detonation velocity and peak pressures and temperatures has been established. At the intermediate stage, temporary two-front configurations are formed. As the fronts propagate they merge the structures are transformed into single-front ones. The established Chapman — Jouguet structures and their differences from gaseous detonation structures are analyzed.

Détail

Keywords: physical and mathematical modeling, numerical simulation, hybrid detonation, gas mixtures, gas suspension of aluminum particles.

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