摘要
为研究装药速度对三波点高度的影响,对不同速度下装药的近地动爆过程开展了数值模拟,获取了动爆冲击波场演化历程图像,定量研究了近地面动爆冲击波流场演化情况。仿真结果表明:装药速度对三波点的高度有较大影响,在速度正方向上,装药速度越大,同时刻三波点高度越高,且变化幅度随装药速度的增加而增大,马赫波形成位置到爆心投影点的距离较静爆时更远,在距爆心投影点相同水平距离处三波点高度越低,在速度负方向上则反之;在速度正方向距爆心投影点相同水平距离处,B炸药和C4炸药形成的马赫波高度相当,二者的三波点迹线更贴近于地面,TNT装药的三波点高度较高。
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.
作者
周至柔
蒋海燕
苏健军
陈尧禹
严家佳
ZHOU Zhirou;JIANG Haiyan;SU Jianjun;CHEN Yaoyu;YAN Jiajia(Xi’an Modern Chemistry Research Institute,Xi’an 710065,China)
出处
《兵器装备工程学报》
CAS
CSCD
北大核心
2023年第6期11-16,共6页
Journal of Ordnance Equipment Engineering
关键词
空中爆炸
运动装药
马赫反射
三波点
数值计算
air blast
moving explosive charge
Mach reflection
three wave point
numerical simulation
