内爆磁压缩准等熵加载过程分析与实验验证

陆禹 谷卓伟 周中玉 孙承纬

陆禹, 谷卓伟, 周中玉, 孙承纬. 内爆磁压缩准等熵加载过程分析与实验验证[J]. 爆炸与冲击, 2022, 42(7): 074101. doi: 10.11883/bzycj-2021-0453
引用本文: 陆禹, 谷卓伟, 周中玉, 孙承纬. 内爆磁压缩准等熵加载过程分析与实验验证[J]. 爆炸与冲击, 2022, 42(7): 074101. doi: 10.11883/bzycj-2021-0453
LU Yu, GU Zhuowei, ZHOU Zhongyu, SUN Chengwei. Analysis and experimental verification of quasi-isentropic loading process in explosive-driven magnetic flux compression[J]. Explosion And Shock Waves, 2022, 42(7): 074101. doi: 10.11883/bzycj-2021-0453
Citation: LU Yu, GU Zhuowei, ZHOU Zhongyu, SUN Chengwei. Analysis and experimental verification of quasi-isentropic loading process in explosive-driven magnetic flux compression[J]. Explosion And Shock Waves, 2022, 42(7): 074101. doi: 10.11883/bzycj-2021-0453

内爆磁压缩准等熵加载过程分析与实验验证

doi: 10.11883/bzycj-2021-0453
基金项目: 国家自然科学基金(11672276)
详细信息
    作者简介:

    陆 禹(1992- ),男,博士研究生,luyuustc@mail.ustc.edu.cn

    通讯作者:

    谷卓伟(1969- ),男,博士,研究员,guzhw1969@126.com

  • 中图分类号: O361.3

Analysis and experimental verification of quasi-isentropic loading process in explosive-driven magnetic flux compression

  • 摘要: 利用磁流体力学程序SSS-MHD模拟了炸药柱面内爆磁通量压缩发生器CJ-100装置的加载过程,讨论了各项装置参数的影响,结果表明装置可达到的峰值磁场值与初始磁场值成反比关系。设计了铁/铜夹层结构的样品靶,在该型装置上开展纯铁的准等熵加载实验。利用光子多普勒测速探头测量到6.43 km/s的样品靶自由面速度,在DT4铁中获得206 GPa的准等熵加载压力。铁材料的压力-比容曲线与理论等熵线基本重合,表明内爆磁压缩加载过程具有较高的等熵程度。
  • 图  1  CJ-100实验系统[10]

    Figure  1.  Experimental system of CJ-100

    图  2  CJ-100型装置的结构示意图和照片

    Figure  2.  Schematic design and photo of CJ-100 device

    图  3  CJ-100型装置的MHD计算模型

    Figure  3.  MHD modeling of CJ-100 device

    图  4  峰值压缩磁场和回转半径随初始磁场的变化曲线

    Figure  4.  Peak magnetic field and turning radius curves with different initial magnetic fields

    图  5  不同初始磁场情况下的磁场-时间曲线

    Figure  5.  Magnetic field vs. time curves with different initial magnetic fields

    图  6  样品靶的结构示意图

    Figure  6.  Structure diagram of sample target

    图  7  不同初始参数下铜夹层靶中的加载压力峰值

    Figure  7.  Peak loading pressure of Cu layered target with different initial parameters

    图  8  铜夹层靶的位置-时间曲线和压力-时间曲线

    Figure  8.  Position vs. time curve and loading pressure vs. time curve of Cu layered target

    图  9  铁/铜夹层样品靶结构示意图

    Figure  9.  Structure diagram of Fe/Cu layered target

    图  10  样品靶自由面速度的实验曲线和计算曲线

    Figure  10.  Measured and simulated free-surface velocity curves of sample target

    图  11  在17.1 μs时样品靶中静水压力、磁压力和材料密度的空间分布

    Figure  11.  Spatial distributions of hydro pressure, magnetic pressure and density in the sample target at 17.1 μs

    图  12  铁材料的压力-比容变化曲线

    Figure  12.  Pressure vs. specific volume curve in iron at Fe/Cu interface

    图  13  铁的相图[21]和SSS-MHD程序计算的温度-压力加载路径

    Figure  13.  Phase diagram of iron [21] and temperature vs. pressure curve calculated by SSS-MHD

    图  14  铜/铁界面内侧处铁材料的静水压力-时间曲线

    Figure  14.  Hydrostatic pressure vs. time curve of iron at inner side of copper/iron interface

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出版历程
  • 收稿日期:  2021-11-02
  • 修回日期:  2022-01-17
  • 网络出版日期:  2022-06-15
  • 刊出日期:  2022-07-25

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