CAJ | 학술논문

爆炸驱动形成的颗粒射流决定了颗粒在爆炸冲击流场中的分散。通过高速分幅照相技术研究了不同饱和度的石英砂壳在爆炸流场中的动态破碎过程，得到了颗粒射流形成的临界条件和射流的结构特征。通过射流撞击靶板产生的加速度信号可以考察射流体在冲击流场中的拉伸和分散。我们发现间隙液体对颗粒射流的形成和演化都有明显的影响。
폭작구동형성적과립사류결정료과립재폭작충격류장중적분산。통과고속분폭조상기술연구료불동포화도적석영사각재폭작류장중적동태파쇄과정，득도료과립사류형성적림계조건화사류적결구특정。통과사류당격파판산생적가속도신호가이고찰사류체재충격류장중적랍신화분산。아문발현간극액체대과립사류적형성화연화도유명현적영향。
Particle jets driven by a central explosion determine dispersal of particles in a blast impact flow field. The dynamic fragmentation of sand shells with different saturation levels subjected to a central explosion was tracked with the high-speed photograph technique.The critical conditions of jets formation and the characteristics of jets were obtained. The stretch and dispersal of particle jets were examined with the vibration acceleration signals of targets generated by the impact of jets.It was found that the interstitial fluid plays an important role in both formation and evolvement of particle jets.