Experimental Study of Pressure Waves upon the Electrical Explosion of Wire under the Conditions of Elevated Hydrostatic Pressure

Smirnov, A. P.; Zhekul, V. G.; Taftai, E. I.; Khvoshchan, O. V.; Shvets, I. S.

doi:10.3103/s1068375520020155

Cited by 7 publications

(6 citation statements)

References 11 publications

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“…However, higher discharge channel resistance and restrike SW amplitude were measured for the current pause mode in their experiments, which was attributed to the suppression of the later-stage EP expansion. Smirnov et al [145] studied the effects of initial pressure on UEWEs for a wider range of 0.1-20 MPa. The results showed that the effects of initial pressure depended on the wire diameter.…”

Section: Power Supply Parametersmentioning

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: Power Supply Parametersmentioning

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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“…Sci. 2023, 13, x FOR PEER REVIEW 2 of 15 pressure [10][11][12]. The magnitude and efficiency of the deposited energy are the fundamental reasons for experimental parameters' effects on the shockwave's peak overpressure in the process of a wire electric explosion [13][14][15][16].…”

Section: Composition Of the Experimental Rigmentioning

confidence: 99%

“…Shockwaves generated in electrical explosion tests have also been extensively studied. The peak overpressure of the shockwave is discussed by conducting a wire explosion under the different spatial arrangements and ambient pressure [10][11][12]. The magnitude and efficiency of the deposited energy are the fundamental reasons for experimental parameters' effects on the shockwave's peak overpressure in the process of a wire electric explosion [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Wire Spatial Structure on the Distribution of Product and the Peak Overpressure of Shockwave Generated by the Electric Explosion

et al. 2023

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The deposition energy and the peak overpressure of shockwaves are the leading engineering parameters of wire electric explosion technology applied to enhance oil recovery. The thicker Cu wire deposits more energy, which transforms into the shockwave efficiently. Therefore, the effects of three diameters (0.3, 0.4, and 0.5 mm) and hollow ratios (0, 0.5, and 0.7) on the electric explosion efficiency were studied by collecting pulse current, explosion products, and shockwaves during the test. All spatial structure designs of the wire depend on the skin effect parameters of the pulse discharge current. The results found that the peak overpressure of the shockwave soars with the increase of the hollow ratios when the diameter is constant. The range of the peak overpressure is 25.2~47.7 MPa. However, the correlation between shockwave and wire diameter changes from negative to positive with the increase of the hollow ratio from 0 to 0.7. The phase distribution deduced by the particle morphology and quantity distribution indicates that it is going to be uniform gradually with the hollow ratio rising from 0 to 0.7. When the extreme simplification is carried out without considering the magnetic diffusion process, it is indicated that the distribution of temperature and phase states along the wire radial is a Bessel function depending on the skin effect of the current density when three times the theoretical enthalpy drives the Cu wire. It means that the desired shockwave could be obtained efficiently by increasing the diameter and the hollow ratio of wire during a wire electric explosion.

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“…Meanwhile, the weakening effects of water resistivity and phase state on underwater electric explosion are also studied [6,7]. The peak overpressure of the shock wave is discussed by conducting wire explosion under the different spatial arrangements and ambient pressure [8][9][10]. The magnitude and efficiency of the deposited energy are the fundamental reasons for experimental parameters' effects on the shockwave's peak overpressure in the process of wire electric explosion [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Energy-load Matching and Shockwave Analysis of Electrical Explosion

Han,

Liu,

Guo

et al. 2023

J. Phys.: Conf. Ser.

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Electrical explosion shockwave is a technique for inducing formation resonance by the interruption of formation pressure balance. By matching complex nonlinear influencing factors, this paper optimizes the engineering parameters and estimates the influence range of the shockwave. It achieves the objective of efficient shockwave acquisition and amplitude control. The test apparatus rapidly discharges the stored energy of various capacitance-voltage schemes, causing the load of various diameter-length structures to generate shaped shockwaves. By characterizing the discharge circuit and the shockwave signal, the energy and load matching was studied. Extraction of shockwave signal characteristics for decomposition and reconstruction analysis. The matching results indicate that the 10 MW loop oscillation is generated within 5 μs of discharge time, with the load diameter structure getting a major effect on the deposited energy. The 50 MPa shaped shockwave is generated in a 100 mm diameter region. And the peak pressure is influenced primarily by the load length structure and voltage scheme. The optimal load structure is D = 0.2 mm and L = 25 mm, controlling 2 to 5 times the input power’s enthalpy and increasing the voltage to create the shockwave more efficiently. The results of shockwave analysis indicate that the signal’s time-domain characteristics correspond precisely with its propagation path. The wavelet packet analysis indicates that the shockwave possesses a broad frequency and a high peak. The detection signal is composed of the principal shock wave, the radiation pressure wave, and the resonance error. The results provide theoretical basis for engineering application.

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Experimental Study of Pressure Waves upon the Electrical Explosion of Wire under the Conditions of Elevated Hydrostatic Pressure

Cited by 7 publications

References 11 publications

Electrical wire explosion as a source of underwater shock waves

Electrical wire explosion as a source of underwater shock waves

Influence of the Wire Spatial Structure on the Distribution of Product and the Peak Overpressure of Shockwave Generated by the Electric Explosion

Energy-load Matching and Shockwave Analysis of Electrical Explosion

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