Propagation of Two-Dimensional Nonsteady Detonation in a Channel with Backward-Facing Step,
MEIJO UNIV NAGOYA (JAPAN) DEPT OF TRANSPORT MACHINE ENGINEERING
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Re-establishment or quenching of a detonation at a corner is conceivably caused by the interaction of numerous triple shock waves contained in the frontal structure of the detonation a combined effect of Prandtl-Meyer expansion and the disappearance of collision partner triple shock waves. In this study, such processes are numerically simulated by allocating a rectangular blockage in a b 7.4 cm channel, where attention is focused on the behavior of the detonation in the vicinity of a backward-facing step. First, a stable detonation with periodical structure having two triple shock waves is worked out for a stoichiometric oxyhydrogen at Po 0.1 atm. Then, the collision of one triple shock wave with the forward-facing step and the interaction of the other triple shock wave with the Prandtl-Meyer expansion from the backward-facing step are studied.