水底爆炸气泡脉动特性  

Characteristic of Bubble Pulsation by Underwater Explosion

作　　者：郅斌伟[1] 马硕[1] 张志江[2] 

机构地区：[1]北京理工大学宇航科学技术学院,北京100081 [2]公安部第一研究所,北京100044

出　　处：《爆破》2009年第3期22-24,72,共4页Blasting

摘　　要：为研究水底爆炸气泡脉动特性,采用PAMFLOW软件和基于JWL状态方程的气泡脉动计算程序对水底爆炸气泡脉动特性进行了数值计算,并用经验公式对自由水域爆炸气泡脉动特性进行了计算。计算结果表明水底爆炸在整个气泡运动过程中,气泡的中心向海底贴附,并形成指向海底的高速射流,气泡被压扁;水底爆炸的气泡膨胀半径大于在无限水域中爆炸;2种数值计算结果比较吻合,且与经验公式计算结果相符,说明采用这2种数值计算方法来研究水底爆炸气泡脉动特性合理。For researching the characteristic of bubble pulsation by underwater explosion, the PAMFLOW software and the calculation program of bubble pulsation based on JWL formula were chose to study, and the bubble pulsation of infinite water explosion was also calculated by empirical formula. The results show that the centre of bubble close to the bottom during the whole movement and form the shape of high speed jet to bottom; the expansion radius of bubble in underwater explosion is larger than in infinite water explosion. The two numerical simulation results is consistent with each other and accord with the empirical results ,so those two ways to study bubble characteristic are reasonable.

关 键 词：水底爆炸 气泡脉动 数值计算 

分 类 号：V211.17[航空宇航科学与技术—航空宇航推进理论与工程]