Simulation of Slow Cook-off for Modular Charges at Different Heating Rates

被引：0
|
作者：
Liu J. [1 ]
Yu Y. [1 ]
机构：
[1] School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu
来源：
Binggong Xuebao/Acta Armamentarii | 2019年 / 40卷 / 05期
关键词：
Heating rate; Modular charge; Numerical simulation; Slow cook-off;
D O I：
10.3969/j.issn.1000-1093.2019.05.011
中图分类号：
学科分类号：
摘要：
The slow cook-off characteristics of modular charge at different heating rates are investigated for analyzing the thermal stability of modular charge under external stimulus. A slow cook-off model for the modular charge was established, and the numerical simulation calculations at the heating rates of 1.8 K/h, 3.6 K/h and 7.2 K/h were made. The results show that the ignition area occurs inside the single base powder near the central flash tube when the heating rate is low(1.8 K/h and 3.6 K/h )during slow cook-off. When the heating rate is high(7.2 K/h), the ignition area is no longer near the single base powder near the central flash tube. The heating rate has a great effect on the ignition time and the ignition position. As the heating rate increases, the ignition time is shorted, and the ignition area moves toward the center of single base powder. The burning response area changes from a central annular area to two annular areas that are symmetric about the center. The change of heating rate has limited impact on the ignition temperature. © 2019, Editorial Board of Acta Armamentarii. All right reserved.
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页码：990 / 995
页数：5
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