Extreme water state produced by underwater wire-array electrical explosion

Fedotov-Gefen, A.; Efimov, S.; Gilburd, L.; Gleizer, S.; Bazalitsky, Galina; Gurovich, V. Tz.; Krasik, Ya. E.

doi:10.1063/1.3446832

Cited by 21 publications

(7 citation statements)

References 10 publications

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“…A detailed overview of the exploding wire technique and its application in shock-wave generation can be found elsewhere (Fedotov-Gefen et al. 2010; Liverts et al. 2015; Sembian et al.…”

Section: Methodsmentioning

confidence: 99%

“…air at 1 atm and 298 K in the present case. A detailed overview of the exploding wire technique and its application in shock-wave generation can be found elsewhere (Fedotov-Gefen et al 2010;Liverts et al 2015;Sembian et al 2016b;Sharma et al 2021c). In comparison with diaphragm-based conventional shock tubes, the present technique provides several advantages such as a small-size test facility, ease of operation, extensive range of shock Mach numbers (M s = 1 to 6; Sembian et al 2016b) and high repeatability between the tests.…”

Section: Experimental Set-upmentioning

confidence: 99%

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Shock-induced aerobreakup of a polymeric droplet

et al. 2023

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Droplet atomization through aerobreakup is omnipresent in various natural and industrial processes. Atomization of Newtonian droplets is a well-studied area; however, non-Newtonian droplets have received less attention despite their being frequently encountered. By subjecting polymeric droplets of different concentrations to the induced airflow behind a moving shock wave, we explore the role of elasticity in modulating the aerobreakup of viscoelastic droplets. Three distinct modes of aerobreakup are identified for a wide range of Weber number $({\sim }10^2\unicode{x2013}10^4)$ and elasticity number $({\sim }10^{-4}\unicode{x2013}10^2)$ variation: these modes are vibrational, shear-induced entrainment and catastrophic breakup modes. Each mode is described as a three-stage process. Stage I is droplet deformation, stage II is the appearance and growth of hydrodynamic instabilities and stage III is the evolution of liquid mass morphology. It is observed that elasticity plays an insignificant role in the first two stages but a dominant role in the final stage. The results are described with the support of adequate mathematical analysis.

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“…A detailed overview of the exploding wire technique and its application in shock-wave generation can be found elsewhere (Fedotov-Gefen et al. 2010; Liverts et al. 2015; Sembian et al.…”

Section: Methodsmentioning

confidence: 99%

Section: Experimental Set-upmentioning

confidence: 99%

Shock-induced aerobreakup of a polymeric droplet

et al. 2023

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“…Researchers from Israel Institute of Technology verified the metal equation of state (EOS) and conductivity model based on nanosecond and microsecond time-scale UEWE [41][42][43]. Cylindrical and spherical wire arrays were used to generate convergent underwater shock waves (SWs) with pressure as high as 6.6 TPa and water compression ratio ∼9 [44]; a large amount of research on SW converging process and water state at extreme pressure [45][46][47][48][49][50][51][52] has been carried out in Israel Institute of Technology, Imperial College London, Tsinghua University, etc. Taking advantage of the high energy deposition, UEWE is used to synthesize metal nanoparticles with smaller diameter and narrower size distribution than the gas medium EWE [53][54][55].…”

Section: Introductionmentioning

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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“…The results of recent research Grinenko et al, 2007;Fedotov et al, 2007;Fedotov-Gefen et al, 2010 on underwater electrical wire array explosions showed that this method can be considered as an alternative to that using light gas guns (Mitchell & Nellis, 1981), Z-pinch (Spielman et al, 1998), powerful lasers (Celliers et al, 2004;Kolacek et al, 2010), or intense heavy ion beams (Tahir et al, 2010) to form warm dense matter (Sasaki et al, 2006). In addition, this method can be especially useful for studying water in extreme states, which is important for studying the physics of giant planets (Lindl et al, 1995;Nellis et al, 1997;Goldman et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Modified wire array underwater electrical explosion

et al. 2012

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The results of experiments involving underwater electrical explosion of different wire arrays using an outer metallic cylinder as a shock reflector are presented. A pulse generator with a stored energy of about 6 kJ, current amplitude ≤ 500 kA, and rise time of 350 ns was used for the wire array explosion. The results of the experiments and of hydrodynamic simulations showed that in the case of a Cu wire array explosion, the addition of the reflector increases the pressure and temperature of the water in the vicinity of the implosion axis about 1.38 and about 1.33 times, respectively. Also, it was shown that in the case of an Al wire array explosion with stainless steel reflector, Al combustion results, and, accordingly, additional energy is delivered to the converging water flow generating about 540 GPa pressure in the vicinity of the explosion axis. Finally, it was found that microsecond time scale light emission that appears with microsecond time scale delay with respect to the nanosecond time scale self-light emission of the compressed water in the vicinity of the implosion axis is related to water bubbles formation which scattered light of exploded wires.

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Extreme water state produced by underwater wire-array electrical explosion

Cited by 21 publications

References 10 publications

Shock-induced aerobreakup of a polymeric droplet

Shock-induced aerobreakup of a polymeric droplet

Electrical wire explosion as a source of underwater shock waves

Modified wire array underwater electrical explosion

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