Hot-Spot Combustion of HMX

被引：2
作者：
Marshakov, V. N. [1 ]
Krupkin, V. G. [1 ]
机构：
[1] Russian Acad Sci, Semenov Fed Res Ctr Chem Phys, Moscow, Russia
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B | 2023年 / 17卷 / 02期
关键词：
octogen (HMX); non-one-dimensional combustion front; hot-spot mechanism; transverse waves; burning rate; hot-spot size;
D O I：
10.1134/S1990793123020100
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
The combustion mechanism of pressed HMX samples is studied. It is shown that its combustion at pressures of 0.5 to 60 atm proceeds in the hot-spot mode. The dependence of the size of the hot spot on the average normal burning rate is obtained. The values of local combustion rates are estimated and the scatter range of their values is determined from the analysis of temperature distributions in time in the condensed phase of the combustion wave, obtained using thermocouples. Based on our own and published data, the so-called unambiguous (macrokinetic) dependence of the surface temperature on the combustion rate (the pyrotechnical law) is analyzed. This dependence is used to calculate the combustion surface temperatures corresponding to the scatter of local velocities, and it is shown that the scatter of the local velocities corresponds to the scatter of the combustion surface temperatures determined in the experiment, which indicates a hot-spot mechanism of HMX combustion.
引用
收藏
页码：394 / 398
页数：5
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