Initiation of detonation of a porous high explosive by a high-enthalpy gas flow

被引：3
|
作者：
Ershov, A. P. [1 ]
Kashkarov, A. O. [1 ]
Luk'yanchikov, L. A. [1 ]
Pruuel, E. R. [1 ]
机构：
[1] Russian Acad Sci, Lavrentev Inst Hydrodynam, Siberian Branch, Novosibirsk 630090, Russia
来源：
COMBUSTION EXPLOSION AND SHOCK WAVES | 2013年 / 49卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
initiation; porous high explosive; deflagration-to-detonation transition; SHOCK-WAVE INITIATION; LOW-SPEED DETONATION; SYNCHROTRON-RADIATION; COMBUSTION; TRANSITION; POWDER; STATE;
D O I：
10.1134/S0010508213010097
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Loose packed PETN initiation by a hot gas flow generated by an explosion of an active charge separated by an air gap is studied. Experimental data obtained by means of synchrotron radiography are compared with simulations employing a two-phase two-velocity two-temperature model. Reasonable agreement is reached by taking into account two processes accelerating the reaction: particle fragmentation during powder compaction and combustion intensification due to instability of the evaporating surface layer excited by a high-velocity gas flow around the particles.
引用
收藏
页码：79 / 91
页数：13
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