| 水中爆炸气泡脉动现象的实验研究 |
| |
| 引用本文： | 汪斌,张远平,王彦平.水中爆炸气泡脉动现象的实验研究[J].爆炸与冲击,2008,28(6):572-576. |
| |
| 作者姓名： | 汪斌 张远平 王彦平 |
| |
| 作者单位： | 中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室,四川,绵阳,621900;中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室,四川,绵阳,621900;中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室,四川,绵阳,621900 |
| |
| 基金项目： | 国家安全重大基础研究基金，中国工程物理研究院科学技术基金 |
| |
| 摘 要： | 在实验水箱中采用高速摄影技术获得了炸药水中爆炸气泡脉动过程图像。实验结果表明:短长径比（1.05）PETN炸药水中爆炸产生的气泡形状近似球形，气泡脉动周期和半径随炸药质量的增加而增大。在膨胀阶段，气泡中心位置保持不变，随着体积的不断缩小，气泡上浮越来越明显。受重力影响，气泡下表面收缩速度高于上表面，在收缩至最小时下表面向上冲顶，气泡溃灭形成水射流。
|
| 关 键 词： | 爆炸力学 气泡脉动 水中爆炸 水射流 |
Experimental study on bubble oscillation formed during underwater explosions |
| |
| WANG Bin,ZHANG Yuan-ping,WANG Yan-ping.Experimental study on bubble oscillation formed during underwater explosions[J].Explosion and Shock Waves,2008,28(6):572-576. |
| |
| Authors: | WANG Bin ZHANG Yuan-ping WANG Yan-ping |
| |
| Institution: | 1.Laboratory for Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China |
| |
| Abstract: | Dynamics of bubble oscillation formed during underwater explosions were studied in a water tank. The expansion and collapse of the bubble pictures created by the explosion of the short length-diameter ratio(1.05) PETN were captured by a high-speed camera. The geometry of the bubble is approximately spherical. The radius and period of oscillation of the bubble increment with the charge weight. The position of the bubble is almost constant during its expansion, but when the bubble is growing smaller, the bubble rises more distinctly. The contract velocity in the bottom of bubble is faster than that of the up surface caused by the influence of gravity; a water jet was formed at the last stages of the bubble collapse. |
| |
| Keywords: | mechanics of explosion bubble oscillation underwater explosion water jet |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《爆炸与冲击》浏览原始摘要信息 |
| 点击此处可从《爆炸与冲击》下载免费的PDF全文 |
|
