Abstract
A brief review of the results obtained in recent research of underwater electrical explosions of wires and wire arrays using microsecond-, submicrosecond-, and nanosecond-timescale high-current generators is presented. In a microsecond-timescale wire explosion, good agreement was attained between the results of experiments and the results of magnetohydrodynamic calculations coupled with equations of state (EOS) and modern conductivity models. Conversely, in a nanosecond-timescale wire explosion, the wire resistance and the EOS were modified in order to fit experimental data. In experiments with cylindrical and spherical wire arrays, generation of a converging shock wave (SW) was demonstrated allowing formation of an extreme state of water in the vicinity of either the axis or the origin of the SW's implosion. In addition, it is shown that SW convergence in superspherical geometry allows one to achieve larger values of pressure, density, and temperature of water in the vicinity of the axis of convergence than in the case of a spherical implosion. The results of experiments and numerical analysis showed that a cylindrical SW keeps its symmetry along the main path of its convergence. In addition, it is shown that underwater electrical explosion of an X-pinch wire configuration and a cone wire array allows one to generate fast jets of metal and water, respectively, without using chemical explosions.
| Original language | English |
|---|---|
| Journal | IEEE Transactions on Plasma Science |
| DOIs | |
| Publication status | Accepted/In press - Jan 18 2016 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Nuclear and High Energy Physics
Cite this
Underwater Electrical Explosion of Wires and Wire Arrays and Generation of Converging Shock Waves. / Krasik, Yakov E.; Efimov, Sergei; Sheftman, Daniel; Fedotov-Gefen, Alexander; Antonov, Oleg; Shafer, Daniel; Yanuka, David; Nitishinskiy, Michael; Kozlov, Maxim; Gilburd, Leonid; Toker, Gregory; Gleizer, Svetlana; Zvulun, Eran; Gurovich, Victor Tz; Varentsov, Dmitry; Rodionova, Maria.
In: IEEE Transactions on Plasma Science, 18.01.2016.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Underwater Electrical Explosion of Wires and Wire Arrays and Generation of Converging Shock Waves
AU - Krasik, Yakov E.
AU - Efimov, Sergei
AU - Sheftman, Daniel
AU - Fedotov-Gefen, Alexander
AU - Antonov, Oleg
AU - Shafer, Daniel
AU - Yanuka, David
AU - Nitishinskiy, Michael
AU - Kozlov, Maxim
AU - Gilburd, Leonid
AU - Toker, Gregory
AU - Gleizer, Svetlana
AU - Zvulun, Eran
AU - Gurovich, Victor Tz
AU - Varentsov, Dmitry
AU - Rodionova, Maria
PY - 2016/1/18
Y1 - 2016/1/18
N2 - A brief review of the results obtained in recent research of underwater electrical explosions of wires and wire arrays using microsecond-, submicrosecond-, and nanosecond-timescale high-current generators is presented. In a microsecond-timescale wire explosion, good agreement was attained between the results of experiments and the results of magnetohydrodynamic calculations coupled with equations of state (EOS) and modern conductivity models. Conversely, in a nanosecond-timescale wire explosion, the wire resistance and the EOS were modified in order to fit experimental data. In experiments with cylindrical and spherical wire arrays, generation of a converging shock wave (SW) was demonstrated allowing formation of an extreme state of water in the vicinity of either the axis or the origin of the SW's implosion. In addition, it is shown that SW convergence in superspherical geometry allows one to achieve larger values of pressure, density, and temperature of water in the vicinity of the axis of convergence than in the case of a spherical implosion. The results of experiments and numerical analysis showed that a cylindrical SW keeps its symmetry along the main path of its convergence. In addition, it is shown that underwater electrical explosion of an X-pinch wire configuration and a cone wire array allows one to generate fast jets of metal and water, respectively, without using chemical explosions.
AB - A brief review of the results obtained in recent research of underwater electrical explosions of wires and wire arrays using microsecond-, submicrosecond-, and nanosecond-timescale high-current generators is presented. In a microsecond-timescale wire explosion, good agreement was attained between the results of experiments and the results of magnetohydrodynamic calculations coupled with equations of state (EOS) and modern conductivity models. Conversely, in a nanosecond-timescale wire explosion, the wire resistance and the EOS were modified in order to fit experimental data. In experiments with cylindrical and spherical wire arrays, generation of a converging shock wave (SW) was demonstrated allowing formation of an extreme state of water in the vicinity of either the axis or the origin of the SW's implosion. In addition, it is shown that SW convergence in superspherical geometry allows one to achieve larger values of pressure, density, and temperature of water in the vicinity of the axis of convergence than in the case of a spherical implosion. The results of experiments and numerical analysis showed that a cylindrical SW keeps its symmetry along the main path of its convergence. In addition, it is shown that underwater electrical explosion of an X-pinch wire configuration and a cone wire array allows one to generate fast jets of metal and water, respectively, without using chemical explosions.
UR - http://www.scopus.com/inward/record.url?scp=84954568980&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84954568980&partnerID=8YFLogxK
U2 - 10.1109/TPS.2015.2513757
DO - 10.1109/TPS.2015.2513757
M3 - Article
JO - IEEE Transactions on Plasma Science
JF - IEEE Transactions on Plasma Science
SN - 0093-3813
ER -