水下双弹爆炸冲击波传播特性研究

Shock wave propagation characteristics of underwater double bomb explosion

重要涉水建筑物易遭受水下多弹爆炸袭击,水下多弹爆炸和单弹爆炸冲击波特性差异明显。为研究水下双弹爆炸冲击波传播特性,对水下同等质量的单弹和双弹爆炸冲击波的传播过程进行了数值模拟,分析其冲击波传播特性的异同,并探讨了两弹起爆距离和起爆当量改变时水下双弹爆炸的冲击波传播特性。研究结果表明:水下双弹爆炸的冲击波传播特性明显不同于水下单弹爆炸;在两弹对称面上,会出现冲击波叠加效应,且水下双弹爆炸是同等质量单弹爆炸冲击波峰值压力的1.43倍左右、比冲量的1.73倍左右;水下双弹爆炸在非对称面上会出现2个波峰,第1个波峰高于第2个波峰。研究结果为水下多弹爆炸冲击波传播特性的进一步研究奠定了基础。

Important wading buildings are vulnerable to underwater multi-bomb explosion,and the shock wave characteristics of underwater multi-bomb explosion and single bomb explosion are significantly different.In order to study the propagation characteristics of underwater double bomb explosion shock wave,the propagation process of underwater single bomb and double bomb explosion shock wave with the same mass is numerically simulated,the similarities and differences of the propagation characteristics of the shock waves are analyzed,and the propagation characteristics of underwater double bomb explosion with different initiation distance and different initiation equivalent are discussed.The results show that the shock wave propagation characteristics of underwater double bomb explosion are obviously different from that of underwater single bomb explosion.The superposition effect of shock wave appears on the symmetric plane of the two bombs,and the peak pressure and specific impulse of the shock wave of the underwater double bomb explosion are about 1.43 times and 1.73 times of the same mass single bomb explosion,respectively.There will be two peaks on the asymmetric plane,the first wave is higher than the second wave.The research results lay a foundation for the subsequent research on the shock wave propagation characteristics of underwater multi-bomb explosions.