| 壳体约束对液体爆炸抛撒流场特性的影响 |
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| 引用本文： | 陆晓霞,李磊,赵守田,严晓芳,王金生,韩超.壳体约束对液体爆炸抛撒流场特性的影响[J].爆炸与冲击,2016,36(6):803-810. |
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| 作者姓名： | 陆晓霞 李磊 赵守田 严晓芳 王金生 韩超 |
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| 作者单位： | 防化研究院国民核生化灾害防护国家重点实验室,北京,102205;防化研究院国民核生化灾害防护国家重点实验室,北京 102205;清华大学航天航空学院,北京 100190 |
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| 基金项目： | 国家自然科学基金面上项目(10572149)，国家自然科学基金NSAF重点项目(10676120) |
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| 摘 要： | 进行了不同壳体约束条件下的液体爆炸抛撒实验，讨论了壳体对起爆后早期抛撒流场特征的影响，分析了爆炸分散过程中液体的状态变化和破碎分散机理，并通过数值模拟进行了对比分析。结果表明，在爆炸反射稀疏波的作用下液体发生空化现象，壳体强度越高，空化发生的延迟越大，发生位置越靠近爆心，同时，爆炸产物气体与液体在其界面附近越早发生掺混。
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| 关 键 词： | 流体力学 爆炸抛撒 壳体 液体 空化 |
| 收稿时间： | 2015-03-24 |
Effects of shell constraints on flow characteristics in an explosive dispersal of a liquid volume |
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| Lu Xiaoxia,Li Lei,Zhao Shoutian,Yan Xiaofang,Wang Jinsheng,Han Chao.Effects of shell constraints on flow characteristics in an explosive dispersal of a liquid volume[J].Explosion and Shock Waves,2016,36(6):803-810. |
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| Authors: | Lu Xiaoxia Li Lei Zhao Shoutian Yan Xiaofang Wang Jinsheng Han Chao |
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| Abstract: | In this study, experimental investigations on the liquid's explosive dispersal under different shell constraints were carried out, effects of shell constraints on the early characteristics of the flow field were discussed, and the mechanism for liquid state transition and breakup was analyzed and compared with the numerical simulation. The results show that cavitation occurs in the liquid when the rarefaction waves reflects on the shell. The stronger the shell constraint, the greater the delay of the cavitation that emerges and the closer to the center where the cavitation is located, and the earlier the explosive product mixes with the liquid on the nearby interfaces. |
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| Keywords: | fluid mechanics explosive dispersal shell constraint liquid cavitation |
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