Phase Transitions in Metal under Fast Selfheating by High-Power Current Pulse

Khishchenko, Konstantin V.; Tkachenko, Svetlana I.; Фортов, В. Е.; Levashov, P. R.; Ломоносов, И. В.; Воробьев, В. С.

doi:10.1063/1.1531340

Cited by 2 publications

(1 citation statement)

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“…Li et al [75] measured the pressure profile of the melting SW, and demonstrated the chasing and overtaking of this weak shock by the strong phase explosion SW. Qian et al [76] observed multiple weak shocks with low initial energy storage in the capacitor bank; in their experiments, the vaporization process lasted more than one oscillation period of discharging circuit, and the multiple shocks were attributed to the multiple peaks of the Joule heating power. Numerical studies can provide more detailed information about the evolution of the wire during the melting and vaporization, and it was found the melting process induced alternating compression and expansion waves [77,78].…”

Section: Sws During Uewementioning

confidence: 99%

Electrical wire explosion as a source of underwater shock waves

Shi¹,

Yin²,

Li³

et al. 2021

J. Phys. D: Appl. Phys.

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The underwater electrical wire explosion (UEWE) is an appealing source of underwater shock waves (SWs) with a high conversion efficiency from electrical energy to mechanical energy, good repeatability and controllability. Industrial applications are already seen in oil-well unblocking and stratum stimulation, and research is currently underway to apply UEWEs in electro-hydraulic forming, exploitation of unconventional gas and oil resources, etc. The emerging new applications call for a review on UEWE research from the perspective of an efficient SW source. This review paper considers the physical processes and numerical simulation methods, electrical and SW characteristics, and current and potential applications, and provides suggestions for future research directions. The code (XJ_UEWE01) developed by the authors to solve a coupling model of UEWE is included. The paper will provide students and researchers new to this field with an explanation of basic concepts of UEWE and a detailed overview of previous studies, and will aid research on UEWE applications, especially device development and parameter optimization.

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Section: Sws During Uewementioning

confidence: 99%

Electrical wire explosion as a source of underwater shock waves

Shi¹,

Yin²,

Li³

et al. 2021

J. Phys. D: Appl. Phys.

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Electrical properties of different materials studied by sub-microsecond underwater electrical explosions of single wires

Grikshtas,

Asmedianov,

Maler

et al. 2024

Physics of Plasmas

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Results of an experimental research and one-dimensional hydrodynamical simulations of critically damped sub-microsecond timescale underwater electrical explosions of wires made of 12 different materials are presented. Using current and voltage waveforms, streak shadow images of the shocks generated in water and wire expansion obtained by one-dimensional hydrodynamic simulations, the maximal values of the energy density, energy density deposition rates, and specific action integrals were determined. It is shown that for all study materials, the deposited energy density significantly exceeds the energy density required for the solid–liquid phase transition but is substantially smaller to induce a full liquid–vapor phase transition of the wire. At the time when the maximal value of the deposited power is realized, the deposited energy densities were found to be larger than the atomization energy for all materials. Estimates of the plasma parameters show that the explosion of the wires can be characterized by a high resistance and lowly ionized weakly coupled plasma. Three groups of materials were distinguished by either decrease, plateau, or increase in the resistance after the maximum of the deposited power. It was confirmed that the observed maximum Planckian temperature for all wire material does not exceed 6000 K due to the “bath” effect and that there is a correlation between the wire radial expansion and the strong shock wave velocities.

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Phase Transitions in Metal under Fast Selfheating by High-Power Current Pulse

Cited by 2 publications

References 0 publications

Electrical wire explosion as a source of underwater shock waves

Electrical wire explosion as a source of underwater shock waves

Electrical properties of different materials studied by sub-microsecond underwater electrical explosions of single wires

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