基于CE/SE方法模拟空气中RDX-Al悬浮粉尘的两相爆轰

昝文涛; 洪滔; 董贺飞

doi:10.11883/1001-1455(2016)05-0603-08

基于CE/SE方法模拟空气中RDX-Al悬浮粉尘的两相爆轰

doi: 10.11883/1001-1455(2016)05-0603-08

昝文涛^{1, 2},
洪滔^2, ,,
董贺飞²

1.
北京理工大学, 北京 100081
2.
北京应用物理与计算数学研究所, 北京 100094

详细信息

作者简介:
昝文涛(1988—), 男, 博士研究生

通讯作者:
洪滔, hongtao@iapcm.cn

中图分类号: O381
计量
- 文章访问数: 4732
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- PDF下载量: 445
- 被引次数: 0
出版历程
- 收稿日期: 2015-02-10
- 修回日期: 2016-01-20
- 刊出日期: 2016-09-25

Numerical simulation of two-phase detonation of suspending RDX-Al dust in air with CE/SE

Zan Wentao^{1, 2},
Hong Tao^{2
, ,},
Dong Hefei²

1.
BeiJing Institute of Technology, Beijing 100088, China
2.
Institute of Applied Physics and Computational Mathematics, Beijing 100088, China

摘要

摘要: 通过CE/SE方法模拟了空气中炸药-铝粉尘的两相爆轰过程, 研究了双粉尘爆轰过程中粒子不同密度对爆轰波速度、压力的影响, 得到密度与波速、爆压间的线性关系。模拟得到悬浮粉尘在复杂通道中的爆轰波传播过程, 研究了双粉尘爆轰的流场演化过程, 选取流场中的一些点对该处流场的压力及温度随时间的变化进行重点研究, 对比了单铝粉尘在同种条件下的爆轰过程, 发现双粉尘爆轰明显提高了爆轰波波速和流场的压力及温度。模拟结果表明CE/SE方法可以成功模拟双粉尘的爆轰过程, 可为多粉尘爆轰的研究提供参考。
- 爆炸力学 /
- 粉尘爆轰 /
- CE/SE /
- 悬浮炸药-铝粉尘
Abstract: In the present work we studied the detonation of Al-RDX suspended in air using CE/SE. The two-phase detonation process of two dusts with different density were simulated and the effects of different particle density on the detonation wave speed and pressure were investigated. It was found that there is a linear relationship between the density ratio and the wave speed and pressure. The flow field evolution of the two dusts detonation in a complex channel was discussed. Compared with the single dust detonation, the detonation wave speed, pressure, and temperature of the two dusts detonation were obviously higher. It is shown that CE/SE is an ideal method at present to simulate the two dusts detonation and can provide useful reference for multi-dust detonation study.
- mechanics of explosion /
- dust detonation /
- CE/SE /
- RDX-Al dust

HTML全文

图 1 CE/SE求解区域模型

Figure 1. CE/SE area model

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图 2 爆轰波速度随双粉尘中铝粉尘密度的变化

Figure 2. Wave speed varying with dust density

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图 3 爆轰波压力随双粉尘中铝粉尘密度的变化

Figure 3. Detonation pressure varying with dust density

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图 4 模拟区域几何模型

Figure 4. Geometrical model of simulated area

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图 5 不同时刻流场压力演化图

Figure 5. Detonation pressure varying with time

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图 6 不同点的压力随时间变化曲线

Figure 6. Pressure varying with time at different points

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图 7 不同点的温度随时间变化曲线

Figure 7. Temperature varying with time at different point

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图 8 铝单颗粒时不同点的压力随时间变化曲线

Figure 8. Pressure varying with time at different points of Al

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图 9 铝单颗粒时不同点的温度随时间变化曲线

Figure 9. Temperature varying with time at different points of Al

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