| 柱形装药水中爆炸气泡的形态演变 |
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| 引用本文： | 黄超,汪斌,刘仓理,王彦平,谭多望. 柱形装药水中爆炸气泡的形态演变[J]. 高压物理学报, 2011, 25(3) |
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| 作者姓名： | 黄超 汪斌 刘仓理 王彦平 谭多望 |
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| 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国防科技重点实验室;哈尔滨工程大学船舶工程学院; |
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| 基金项目： | 国家安全重大基础研究项目(51335010202); 国家自然科学基金委员会-中国工程物理研究院联合基金(10976008) |
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| 摘 要： | 采用高速摄影方法在实验水箱中获得了长径比为3.35~6.75的柱形PETN炸药水中爆炸气泡脉动的图像，进而结合真实的爆轰过程和Rayleigh气泡运动方程，研究了气泡的形态演变规律。研究结果表明，柱形装药在水中爆炸时，形成的初始气泡的形状为非球对称形，这种非对称特征随长径比的增加而增大。气泡表面的运动也表现出明显的非球对称特征，气泡表面在装药径向的膨胀运动呈指数衰减，在装药轴向两端的膨胀运动更接近于分段线性衰减。气泡表面的不对称运动与柱形装药水下爆炸的能量输出结构不均有关，与冲击波的有效能量分布规律是相似的。
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| 关 键 词： | 爆炸力学 柱形装药 高速摄影 气泡形态 水中爆炸 |
| 收稿时间： | 2010-04-20; |
On the Shape Evolution of Underwater Explosion Bubbles by Cylindrical Charges |
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| HUANG Chao,,WANG Bin,LIU Cang-Li,WANG Yan-Ping,TAN Duo-Wang. On the Shape Evolution of Underwater Explosion Bubbles by Cylindrical Charges[J]. Chinese Journal of High Pressure Physics, 2011, 25(3) |
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| Authors: | HUANG Chao WANG Bin LIU Cang-Li WANG Yan-Ping TAN Duo-Wang |
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| Affiliation: | HUANG Chao1,2,WANG Bin1,LIU Cang-Li1,WANG Yan-Ping1,TAN Duo-Wang1(1.National Key Laboratory of Shock Wave and Detonation Physics,Institute of Fluid Physics,CAEP,Mianyang 621900,China,2.School of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China) |
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| Abstract: | Oscillation images of underwater explosion bubbles generated by cylindrical PETN with length to diameter ratio from 3.35 to 6.75 are conducted in a water tank by using high-speed photography technology.Bubble shape evolution is investigated by involving real detonation processes and Rayleigh-Plesset function.Results show that the initial bubble has an asymmetric shape,and the asymmetry is enhanced as the length to diameter ratio increases.The bubble-water interface expansion motion at the side of the charge... |
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| Keywords: | mechanics of explosion cylindrical charge high-speed photography bubble shape underwater explosion |
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