近场水下爆炸气泡与双层破口结构的相互作用

贺铭 张阿漫 刘云龙

贺铭, 张阿漫, 刘云龙. 近场水下爆炸气泡与双层破口结构的相互作用[J]. 爆炸与冲击, 2020, 40(11): 111402. doi: 10.11883/bzycj-2020-0110
引用本文: 贺铭, 张阿漫, 刘云龙. 近场水下爆炸气泡与双层破口结构的相互作用[J]. 爆炸与冲击, 2020, 40(11): 111402. doi: 10.11883/bzycj-2020-0110
HE Ming, ZHANG Aman, LIU Yunlong. Interaction of the underwater explosion bubbles and nearby double-layer structures with circular holes[J]. Explosion And Shock Waves, 2020, 40(11): 111402. doi: 10.11883/bzycj-2020-0110
Citation: HE Ming, ZHANG Aman, LIU Yunlong. Interaction of the underwater explosion bubbles and nearby double-layer structures with circular holes[J]. Explosion And Shock Waves, 2020, 40(11): 111402. doi: 10.11883/bzycj-2020-0110

近场水下爆炸气泡与双层破口结构的相互作用

doi: 10.11883/bzycj-2020-0110
基金项目: 国家自然科学基金(11872158)
详细信息
    作者简介:

    贺 铭(1996- ),男,博士,20140112heming@hrbeu.edu.cn

    通讯作者:

    张阿漫(1981- ),男,博士,教授,博士生导师,zhangaman@hrbeu.edu.cn

  • 中图分类号: O383

Interaction of the underwater explosion bubbles and nearby double-layer structures with circular holes

  • 摘要: 针对双层结构在水中受到水下爆炸冲击这一问题,利用欧拉有限元数值模型对近场水下爆炸气泡与双层破口结构的相互作用机理进行了研究,分析了舱室涌流及流场演化等规律。首先,通过放电实验对数值模型进行了验证,结果表明,数值结果和实验结果吻合较好;然后,总结了不同破口尺寸、不同起爆位置和不同壳间水位条件下的耦合作用规律。在内部空气、流体惯性以及破口的联合作用下,气泡演化过程中会出现气泡分割现象。当内层破口尺寸系数小于0.5时,内舱室内会出现二次涌流现象,且涌流形态较细长;炸药起爆位置系数小于0.1时,自由液面处会出现破碎和重闭合现象;壳内水位对舱室涌流量的影响作用较为复杂,当水位满舱时,急速涌流会减少船艇的应急时间。
  • 图  1  近场水下爆炸气泡与双层破口结构相互作用示意图

    Figure  1.  Schematic of interaction between bubble and double breaken structure in near field underwater explosion

    图  2  欧拉有限元方法示意图

    Figure  2.  Schematic of Eulerian finite element method

    图  3  实验装置图

    Figure  3.  Picture of experimental device

    图  4  数值结果和实验结果的对比图

    Figure  4.  The comparison between numerical and experimental results

    图  5  不同时刻气泡的形态和流场压力变化图

    Figure  5.  The bubble shape and flow field pressure change at different moments

    图  6  不同时刻气泡的形态和流场压力变化图

    Figure  6.  The bubble shape and flow field pressure change at different moments

    图  7  不同破口尺寸下舱室涌流量随时间的变化曲线

    Figure  7.  Changes of cabin inrush flow with time under different breach size

    图  8  不同时刻气泡的形态和流场压力变化图

    Figure  8.  The bubble shape and flow field pressure change at different moments

    图  9  不同起爆位置下舱室涌流量随时间的变化曲线

    Figure  9.  Changes of cabin inrush flow with time under different detonation position

    图  10  不同时刻气泡的形态和流场压力变化图

    Figure  10.  The bubble shape and flow field pressure change at different moments

    图  11  不同水位下舱室涌流量随时间的变化曲线

    Figure  11.  Changes of cabin inrush flow with time at different water levels

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出版历程
  • 收稿日期:  2020-04-08
  • 修回日期:  2020-05-22
  • 刊出日期:  2020-11-05

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