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Determination of the Critical Temperature of Self‐Ignition of Explosives from the Stability Analysis of the Thermal Conductivity Equation
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2021-01-08 , DOI: 10.1002/prep.202000211
Alexander Khaneft 1, 2
Affiliation  

The analysis of stability of the heat conductivity equation with exothermic reaction of zero order and volume‐averaged stationary temperature the criteria of thermal explosion of condensed explosive materials (EM) expressions were obtained for parallelepiped, cylinder of finite length and sphere. Estimations of kinetic parameters (frequency factor and thermal decomposition rate activation energy) of HMX and FOX‐12 were performed. The numerical solution of thermal conductivity equation for HMX and FOX‐12 in the form of cubes was done. A good agreement of the EM ignition criterion in the form of a cube with the available experimental results and numerical solutions of the thermal conductivity equation was obtained. We showed that accounting for the decomposition reaction in the thermal conductivity equation leads to a slight increase in the critical ignition temperature for HMX and FOX‐12.

中文翻译:

从导热系数方程的稳定性分析确定炸药自燃的临界温度

通过对零级放热反应和体积平均固定温度的热导率方程的稳定性进行分析,得出了平行六面体,有限长度圆柱体和球体的爆炸性材料(EM)表达式的热爆炸准则。对HMX和FOX-12的动力学参数(频率因子和热分解速率活化能)进行了估算。对HMX和FOX-12以立方体形式的导热系数方程进行了数值解。获得了立方体形式的EM点火标准与可用的实验结果以及热导率方程的数值解的良好一致性。
更新日期:2021-03-04
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