圆柱装药在偏心定向起爆时水中近场压力特性

Pressure characteristics in the near field of underwater explosion for cylindrical charge directed detonation

对UHL-5炸药在侧向9点偏心定向起爆和几何中心点起爆时的水下爆炸近场峰值压力分布特性进行实验研究和数值模拟,得到2种起爆条件下不同距离与方位角测点处冲击波峰值压力和侧向9点起爆时的定向增益区域。结果表明,对于5kg圆柱形UHL-5装药,采用侧向9点偏心定向起爆方式时,在爆距750mm、方位角90°范围内的流场区域具有明显的峰值压力定向性。

A series of experiment and simulation were carried out to explore the peak pressure distribution in the near field of the cylindrical charge underwater explosion in the two cases of nine-point off-center detonation and central detonation.The shock wave peak pressures in the above two cases were obtained at the tested points with the distances and angles.And the directed peak pressure gain field was acquired in the case of nine-point off-center detonation.The results show that in the range of 750 mm and the angle of 0°~90 °of underwater explosion field for the five-kilogram UHL-5 charge,the shock wave peak pressure by nine-point off-center detonation is higher than by central detonation.