Influence of charge speed on the height of three wave points

DOI:	10.11809/bqzbgcxb2023.06.002
Keywords:	air blast; moving explosive charge; Mach reflection; three wave point; numerical simulation
Abstract:	In order to study the effect of charge speed on the height of three wave points, this paper conducts numerical simulation on the near ground dynamic explosion process of charges at different speeds, obtains the evolution images of the dynamic explosion shock wave field, and quantitatively studies the evolution of the near ground dynamic explosion shock wave flow field. The simulation results show that the charge speed has a great influence on the height of the three wave points. In the positive direction of the speed, the higher the charge speed is, the greater the height of the three wave points is. Besides, the variation amplitude increases with the increase of the charge speed, and the distance from the formation position of the Mach wave to the projection point of the explosion center is farther than that during the static explosion. The lower the height of the three wave points is at the same horizontal distance from the projection point of the explosion center, the opposite is in the negative direction of the speed. At the same horizontal distance from the positive direction of the speed to the projection point of the explosion center, the Mach wave formed by explosive B and C4 is of the same height, the three wave point trace of the both explosives is closer to the ground, and the three wave point height of TNT charge is higher.
Published:	2023-06-28
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