Theoretical Calculation and Numerical Simulation of Thermal Safety on NEPE Propellant

被引：0

作者：

Qin P.-W. ^{[1
,2
]}

Wang M.-L. ^{[1
,2
,4
]}

Lu R.-H. ^{[1
,2
]}

Guo C.-L. ^{[1
,2
]}

Huang C.-L. ^{[1
,2
]}

Li Y. ^{[1
,2
]}

Zhao X.-B. ^{[1
,2
,3
]}

Peng S. ^{[1
,2
,3
]}

机构：

[1] Hubei Institute of Aerospace Chemotechnology, Xiangyang, 441003, Hubei

[2] Science and Technology on Aerospace Chemical Power Laboratory, Xiangyang, 441003, Hubei

[3] Safety Technology Research Center of Solid Propellant in Aerospace, Xiangyang, 441003, Hubei

[4] The Key Laboratory of Emergency Rescue and Safety Protection Technology of Hubei Province, Xiangyang, 441003, Hubei

来源：

Huozhayao Xuebao/Chinese Journal of Explosives and Propellants | 2019年 / 42卷 / 06期

关键词：

Critical ambient temperature of thermal explosion; Explosion mechanics; NEPE propellant; Numerical calculation; Theoretical calculation; Thermal safety;

D O I：

10.14077/j.issn.1007-7812.201801023

中图分类号：

学科分类号：

摘要：

In order to predict the thermal safety of NEPE propellant grain with different sizes, the mathematical relationship between the size and apparent kinetic parameters of exothermic decomposition reaction, based on previous thermal safety tests of NEPE propellant grain with different sizes, was applied for theoretical calculation and numerical simulation, and the thermal safety performance of NEPE propellant grain with different sizes was investigated. The numerical simulation results of the thermal explosion critical temperature and delay period are 78-79℃ and 100-150d (79℃); the thermal explosion critical temperature obtained from original Semenov, Frank-Kamenetskii, Thomas theory algorithm and original finite element methods are higher than that of the test data, and the data obtained by engineering modified Semenov theory algorithm are closer to the experimental results. In the process of increasing diameter from 10mm to 3000mm, the thermal explosion critical environment temperature gradually approaches from 130℃ to 60℃, and the smaller the size is, the more obvious the effect of decreasing the critical environment temperature of thermal explosion is. © 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.

引用

页码：602 / 607and613

共 11 条

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