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

LU Yu; GU Zhuowei; ZHOU Zhongyu; SUN Chengwei

doi:10.11883/bzycj-2021-0453

Volume 42 Issue 7

Jul. 2022

Turn off MathJax

Article Contents

Article Navigation > Explosion And Shock Waves > 2022 > 42(7): 074101

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

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

PDF( 3482 KB)

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

doi: 10.11883/bzycj-2021-0453

LU Yu^{1, 2
,},
GU Zhuowei^{2
,
,},
ZHOU Zhongyu²,
SUN Chengwei³

1.
Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, Anhui, China
2.
Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China
3.
Shanghai Institute of Laser Plasma, China Academy of Engineering Physics, Shanghai 201800, China

Received Date: 2021-11-02
Rev Recd Date: 2022-01-17

Available Online: 2022-06-15

Publish Date: 2022-07-25

Abstract

Abstract

Explosive-driven magnetic flux compression generator is a device that converts the chemical energy of explosives into electromagnetic energy. It has attracted great attention in the field of high energy density physics due to its wide application and important development prospect in magnetic field compression and material high pressure loading. CAEP has conducted a lot of research on CJ-100 device, which can stably generate an axial magnetic field of about 700 T. In order to investigate the loading capacity of CJ-100 device, the loading process and the effects of various device parameters are discussed by using the one-dimensional magnetohydrodynamics program SSS-MHD. The results show that the peak magnetic field that can be reached by the device is inversely proportional to the initial magnetic field, and the size of sample target has a great influence on the loading pressure. A sample target of iron/copper layered structure was designed for quasi-isentropic loading experiment of pure iron. The initial inner radius of the sample target was 3 mm, and the thickness of both iron and copper layer was 1 mm. The experiment was carried out on CJ-100 device with an initial magnetic field of 5.5 T, atmospheric pressure of several hundred Pa and ambient temperature. The free surface velocity of the sample target of about 6.43 km/s was measured with Photonic Doppler Velocimetry probes. SSS-MHD program with proper material models provided curve of velocity versus time that agree well with the experimental measurement. Simulation then shows that a quasi-isentropic loading pressure of 206 GPa is obtained in DT4 iron. The p-v curve of iron material is basically coincided with the theoretical isentropic line, indicating that the loading process of CJ-100 has a high isentropic degree.
- magneto-hydrodynamics,
- explosive-driven magnetic flux compression generator,
- quasi-isentropic compression,
- CJ-100 device

FullText(HTML)

References(21)

References

[1]	ALTGILBERS L L, BROWN M D J, GRISHNAEV I, 等. 磁通量压缩发生器 [M]. 孙承纬, 周之奎, 译. 北京: 国防工业出版社, 2008: 1–5.
[2]	谷卓伟, 罗浩, 张恒第, 等. 炸药柱面内爆磁通量压缩实验技术研究 [J]. 物理学报, 2013, 62(17): 170701. DOI: 10.7498/aps.62.170701. GU Z W, LUO H, ZHANG H D, et al. Experimental research on the technique of magnetic flux compression by explosive cylindrical implosion [J]. Acta Physica Sinica, 2013, 62(17): 170701. DOI: 10.7498/aps.62.170701.
[3]	SAKHAROV A D, LYUDAEV R Z, SMIRNOV E N, et al. Magnetic cumulation [J]. Soviet Physics Uspekhi, 1991, 34(5): 385–386. DOI: 10.3367/UFNr.0161.199105f.0047.
[4]	BOYKO B A, BYKOV A I, DOLOTENKO M I, et al. More than 20 MG magnetic field generation in the cascade magnetocumulative MC-1 generator[M]// Megagauss Magnetic Field Generation, its Application to Science and Ultra-High Pulsed-Power Technology. Tallahassee: World Scientific Publishing, 2004: 61–66. DOI: 10.1142/9789812702517_0009.
[5]	FOWLER C M, GARN W B, CAIRD R S. Production of very high magnetic fields by implosion [J]. Journal of Applied Physics, 1960, 31(3): 588–594. DOI: 10.1063/1.1735633.
[6]	HAWKE R S, DUERRE D E, HUEBEL J G, et al. Method of isentropically compressing materials to several megabars [J]. Journal of Applied Physics, 1972, 43(6): 2734–2741. DOI: 10.1063/1.1661586.
[7]	HERLACH F, KNOEPFEL H. Megagauss fields generated in explosive - driven flux compression devices [J]. Review of Scientific Instruments, 1965, 36(8): 1088–1095. DOI: 10.1063/1.1719809.
[8]	BYKOV A I, DOLOTENKO M I, KOLOKOL’CHIKOV N P, et al. The cascade magnetocumulative generator of ultrahigh magnetic fields: a reliable tool for megagauss physics [J]. Physica B:Condensed Matter, 1996, 216(3/4): 215–217. DOI: 10.1016/0921-4526(95)00475-0.
[9]	陈学印, 龚兴根, 陈英石, 等. 爆炸磁通量压缩装置的实验研究 [A]. 王淦昌论文选集, 1987: 151–153.
[10]	ZHOU Z Y, GU Z W, LUO H, et al. A compact explosive-driven flux compression generator for reproducibly generating multimegagauss fields [J]. IEEE Transactions on Plasma Science, 2018, 46(10): 3279–3283. DOI: 10.1109/TPS.2018.2794761.
[11]	WENG J D, TAN H, HU S L, et al. New all-fiber velocimeter [J]. Review of Scientific Instruments, 2005, 76(9): 093301. DOI: 10.1063/1.2008989.
[12]	畅里华, 汪伟, 谷卓伟, 等. 柱面内爆磁通量压缩超高速摄影技术研究 [J]. 光学学报, 2015, 35(10): 1032001. DOI: 10.3788/AOS201535.1032001. CHANG L H, WANG W, GU Z W, et al. Study on magnetic flux compression by cylindrical implosion using ultrahigh-speed photography technology [J]. Acta Optica Sinica, 2015, 35(10): 1032001. DOI: 10.3788/AOS201535.1032001.
[13]	赵继波, 孙承纬, 谷卓伟, 等. 爆轰驱动固体套筒压缩磁场计算及准等熵过程分析 [J]. 物理学报, 2015, 64(8): 080701. DOI: 10.7498/aps.64.080701. ZHAO J B, SUN C W, GU Z W, et al. Magneto-hydrodynamic calculation of magnetic flux compression with explosion driven solid liners and analysis of quasi-isentropic process [J]. Acta Physica Sinica, 2015, 64(8): 080701. DOI: 10.7498/aps.64.080701.
[14]	MADER C L. Numerical modeling of explosives and propellants [M]. 3rd ed. Boca Raton: CRC Press, 2008: 384–387.
[15]	孙承纬. 一维冲击波和爆轰波计算程序SSS [J]. 计算物理, 1986, 3(2): 142–154. DOI: 10.19596/j.cnki.1001-246x.1986.02.002. SUN C W. SSS: a code for computing one dimensional shock and detonation wave propagation [J]. Chinese Journal of Computational Physics, 1986, 3(2): 142–154. DOI: 10.19596/j.cnki.1001-246x.1986.02.002.
[16]	BURGESS T J. Electrical resistivity model of metals [C]// Proceedings of the 4th International Conference on Megagauss Magnetic-Field Generation and Related Topics. Santa: Plenum Press, 1986: 307–316.
[17]	李茂生, 陈栋泉. 高温高压下材料的本构模型 [J]. 高压物理学报, 2001, 15(1): 24–31. DOI: 10.11858/gywlxb.2001.01.004. LI M S, CHEN D Q. A constitutive model for materials under high-temperature and pressure [J]. Chinese Journal of High Pressure Physics, 2001, 15(1): 24–31. DOI: 10.11858/gywlxb.2001.01.004.
[18]	MCQUEEN R G, MARSH S P. Equation of state for nineteen metallic elements from shock-wave measurements to two megabars [J]. Journal of Applied Physics, 1960, 31(7): 1253–1269. DOI: 10.1063/1.1735815.
[19]	HIXSON R S, FRITZ J N. Shock compression of iron [M]// SCHMIDT S C, DICK R D, FORBES J W, et al. Shock Compression of Condensed Matter, 1991. Amsterdam: North-Holland, 1992: 69–70.
[20]	BARKER L M, HOLLENBACH R E. Shock wave study of the α $\rightleftarrows $ ε phase transition in iron [J]. Journal of Applied Physics, 1974, 45(11): 4872–4887. DOI: 10.1063/1.1663148.
[21]	SANO T, MORI H, SAKATA O, et al. Femtosecond laser driven shock synthesis of the high-pressure phase of iron [J]. Applied Surface Science, 2005, 247: 571–576. DOI: 10.1016/j.apsusc.2005.01.050.