Spatial confinement effects of bubbles produced by laser ablation in liquids

Zhi, Zhang; Wang, Aosong; Wu, Jian; Liu, YanZhang; Huang, Dapeng; Qiu, Yan; Li, Jilong

doi:10.1063/1.5127261

Cited by 8 publications

(3 citation statements)

References 47 publications

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“…Despite extensive studies about the laser ablation process and mechanism in liquid by a lot of researchers, studies focusing on the target under restricted conditions remain scarce. In our previous paper, the evolution of laser bubbles of LAL has been investigated in a spatial confinement condition, and the results show that it has an great influence on the bubble collapse stage [38]. In this paper, we further study the influence of spatial restriction on the whole process of LAL, including laser-induced plasma, shock waves and bubble dynamics.…”

Section: Introductionmentioning

confidence: 92%

Spatial restriction on properties of nanosecond pulsed laser ablation of aluminum in water

Zhang¹,

Wu²,

Li³

et al. 2020

J. Phys. D: Appl. Phys.

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The evolution of plasma radiation, shock waves and the bubbles generated by laser ablation in liquids (LAL) has been investigated in spatial restriction conditions by the temporally resolved plasma radiation images and time-resolved laser shadowgraphy. No significant plasma enhancement effect is observed at the moments when two reflected waves converge in opposite directions. Two reasons may account for this phenomenon: one is that cavitation bubbles block the interaction between reflected waves and plasma, which prevents reflected waves from transmitting energy to the plasma; and the other is that the laser energy is significantly absorbed by the water medium and the emission of plasma decays rapidly in water. The results indicate that the plasma luminous intensity attenuates and lifetime decreases under restricted conditions, which is due to the existence of the moving breakdown model in the water. The Bjerknes effect of the wall on the bubbles leads to the asymmetry of the bubble evolution under restricted conditions. The dynamics of the first bubble generated by LAL is described in an analytic method with the Rayleigh-Plesset equation. The results further indicate Bjerknes force exerts little impact upon bubble evolution in the extension phase, but imposes huge effects at the shrinkage phase.

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Section: Introductionmentioning

confidence: 92%

Spatial restriction on properties of nanosecond pulsed laser ablation of aluminum in water

Zhang¹,

Wu²,

Li³

et al. 2020

J. Phys. D: Appl. Phys.

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“…UEWE can serve as an efficient source of underwater SWs with good repeatability and controllability [1,2], and can be potentially applied in electrohydraulic forming, oil-well unblocking and stratum stimulation, food processing, * Author to whom any correspondence should be addressed. etc [3][4][5][6][7][8][9][10]. Recently, SW fracturing by combining low sensitivity energetic materials and electrical wire explosion has proved its feasibility in the exploitation of unconventional fossil resources such as coal bed methane and shale gas [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional simulation of microsecond-timescale underwater electrical explosion of a copper wire

Shi¹,

Li²,

Hu³

et al. 2022

J. Phys. D: Appl. Phys.

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Underwater electrical wire explosion (UEWE) is an efficient source of underwater shock waves (SWs). In order to efficiently simulate the interaction between the UEWE SW and structures, a coupled model that includes the electric circuit, the exploding wire and the surrounding water is established based on user-subroutines provided by the commercial explicit dynamics software ANSYS AUTODYN. The modeling starts from room temperature by using the tabular wide-range metal equation of state (EOS) and conductivity data. Experimental validation is performed with copper wires exploded by a μs-timescale pulsed discharge. The numerical results show satisfactory consistency with experiments in terms of the current and voltage waveforms, the wire expansion trajectory, the evolution of SW front, the interaction between SW and electrodes and the SW pressure profiles. The main discrepancy lies in the SW amplitude that is ~20% higher in the calculation and the possible reasons are discussed in detail. Based on this approach and with proper modifications to the metal EOS and conductivity data, the interaction between UEWE SWs and structures can be efficiently modeled in 2D and 3D for practical applications.

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“…Experimental studies confirm these theoretical predictions and demonstrate the rich array of dynamics (necking, splitting and jetting) associated with this configuration. [30][31][32][33][34][35][36] Although a number of computational studies have considered the behaviour of cavitation bubbles in confinement, 26,[37][38][39][40][41][42] only a handful of these consider the viscosity and investigate the bubble-induced shear stress on confining surfaces. 27,43 Furthermore, none of these studies has considered the acoustically-driven collapse of a bubble, where the shear rates observed are dependent on the strength of the driven acoustic field.…”

Section: Introductionmentioning

confidence: 99%