Accession Number : ADP000265

Title :   Propagation of Two-Dimensional Nonsteady Detonation in a Channel with Backward-Facing Step,

Corporate Author : MEIJO UNIV NAGOYA (JAPAN) DEPT OF TRANSPORT MACHINE ENGINEERING

Personal Author(s) : Sugimura,T. ; Taki,S. ; Fujiwara,T.

Report Date : JUL 1981

Pagination or Media Count : 9

Abstract : 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.

Descriptors :   *Detonations, *Shock waves, *Wave propagation, Two dimensional, Japan

Distribution Statement : APPROVED FOR PUBLIC RELEASE