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悬浮RDX炸药和铝颗粒混合粉尘爆轰的数值模拟
引用本文:洪滔,秦承森,林文洲.悬浮RDX炸药和铝颗粒混合粉尘爆轰的数值模拟[J].爆炸与冲击,2009,29(5):468-473.
作者姓名:洪滔  秦承森  林文洲
作者单位:1.北京应用物理与计算数学研究所,北京 100088
摘    要:采用两相流方法对炸药颗粒直径为20.0 m时与铝颗粒混合物的爆轰波的发展与传播过程及爆轰波参数进行了数值计算。结果表明,在炸药粉尘中加入铝颗粒,可以大大提高爆轰波参数。当铝颗粒直径为3.4 m时,尽管铝颗粒的直径较炸药颗粒直径小,但由于炸药颗粒的点火温度低,二者的点火时间相差不多。如果铝颗粒的直径为7.0 m,由于铝颗粒的点火滞后于炸药颗粒的点火,混合颗粒粉尘中可能形成双波阵面的爆轰波。

关 键 词:爆炸力学    两相爆轰    两相流    RDX粉尘    铝粉尘

Numerical simulation of detonation in suspended mixed RDX and aluminum dust
HONG Tao,QIN Cheng-sen,LIN Wen-zhou.Numerical simulation of detonation in suspended mixed RDX and aluminum dust[J].Explosion and Shock Waves,2009,29(5):468-473.
Authors:HONG Tao  QIN Cheng-sen  LIN Wen-zhou
Affiliation:1.Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
Abstract:Detonation in suspended mixed RDX and aluminum particles in air was numerically simulated with the two-phase flow model. Formation and propagation of detonation was examined and the parameters of detonation were obtained. In calculation the diameter of RDX particle is 20.0 μm. Numerical results show that aluminum particles added in high explosive dust can enhance the parameters of detonation waves. As the diameter of aluminum particles is 3.4 μm, the ignition distances of two kinds particles are almost the same. As the diameter of aluminum particle is 7.0 μm, the ignition distance of aluminum particles is much longer than that of high explosive particles, and a double front detonation can occur in the suspended mixed RDX and aluminum dust.
Keywords:mechanics of explosion  two-phase detonation  two-phase flow model  RDX dust  aluminum dust
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