CAJ | 학술논문

采用两相流方法对炸药颗粒直径为20.0 μm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 μm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 μm,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.
채용량상류방법대작약과립직경위20.0 μm시여려과립혼합물적폭굉파적발전여전파과정급폭굉파삼수진행료수치계산.결과표명,재작약분진중가입려과립,가이대대제고폭굉파삼수.당려과립직경위3.4 μm시,진관려과립적직경교작약과립직경소,단유우작약과립적점화온도저,이자적점화시간상차불다.여과려과립적직경위7.0 μm,유우려과립적점화체후우작약과립적점화,혼합과립분진중가능형성쌍파진면적폭굉파.
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.