不同边界条件水下爆炸气泡脉动对比的试验研究  

Comparison Experimental Study of Underwater Explosion Bubble Pulse Among the Different Boundaries

作　　者：金辉[1,2] 张庆明[1] 高春生[2] 赵鹏远[2] 

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室 [2]91439部队

出　　处：《兵工学报》2009年第S2期213-217,共5页Acta Armamentarii

摘　　要：装药在近水底和沉底爆炸时的气泡脉动非常复杂,研究气泡脉动特性具有重要意义。利用高速摄影和自由场压力测量系统对装药在自由场、近水底和沉底爆炸3个工况下的气泡脉动和二次脉动压力进行了对比研究。试验结果表明:装药在自由场爆炸中气泡脉动特性与COLE经典理论一致;水底边界条件对装药近水底和沉底爆炸的二次脉动周期影响较大,沉底爆炸二次脉动周期大于近水底爆炸,近水底爆炸大于自由场爆炸;装药近水底和沉底爆炸时二次脉动压力峰值很小,可以忽略对远场目标的破坏作用。The bubble's pulse is very complicated at charge explosion under the conditions of near-ground and ground,which investigation has an important significance.Comparison of the bubble pulsating movement and its secondary pulsating movement pressure were performed by using a high speed camera and a pressure measuring system among free field,near-ground and ground explosions.The experimented results show that the bubble properties consist with that of the classic COLE theory under the condition of free field explosion;the ground boundary condition has a great effect on the secondary pulse periods of near ground and ground explosion,in which the secondary pulse period of ground explosion is larger than that of near ground explosion,the period of the near is larger than that of the free;the secondary pulse pressure peaks of near ground and ground explosion are so small that its damage effect can be neglected for the far-field objects.

关 键 词：水下爆炸 气泡脉动 周期 压力 

分 类 号：TJ011[兵器科学与技术—兵器发射理论与技术]