基于CE/SE方法模拟空气中RDX-Al悬浮粉尘的两相爆轰

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。

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

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.