Jets in quiescent bubbles caused by a nearby oscillating bubble

Pain, Agnès; Goh, Bing Hui Terence; Klaseboer, Evert; Ohl, Siew-Wan; Khoo, Boo Cheong

doi:10.1063/1.3692749

Cited by 38 publications

(19 citation statements)

References 29 publications

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“…The overall behavior of interaction between the bubble and the free surface is recorded by a high speed camera. The liquid jet on the free surface can be divided into three parts, thin jet, thick jet, and crown-like structure around the thick jet, similar to the results of spark generations [4,7]. We find that the thin jet on the center of surface depression is crucial for crown formation and different morphologies of the crown-like structure appear with altering the bubble depth.…”

Section: Introductionsupporting

confidence: 68%

“…This shape evolution was reconstructed well in theoretical simulations [3][4][5]. In addition to the bubble, a liquid jet was seen to burst out from the free surface, and for a certain bubble depth, there emerged a thin jet followed by a markedly thicker jet and a circular crown-like jet perfectly connected on the shoulder of the thick jet transited to the thin jet [4,7].…”

Section: Introductionsupporting

confidence: 64%

“…The strong interaction between the upper boundary of the bubble and the free surface during the first expansion phase leads to some energy loss from the bubble similar as a venting effect mentioned in Ref. 7. Such an evolution about this venting effect was described more detail in the studies of laser ablation on a surface [25,26].…”

Section: Resultsmentioning

confidence: 77%

“…Finally, as shown in Fig. 5, the top rim of the crown wall is nearly flat for 0.6 ≤ γ ≤ 1.02, which is significantly different to the two-arm splash on the crown wall induced by spark discharge [7]. This difference is probably related to the unavoidable mechanical influence due to the electrodes in spark discharge.…”

Section: Resultsmentioning

confidence: 84%

See 3 more Smart Citations

Exploration of water jet generated by Q-switched laser induced water breakdown with different depths beneath a flat free surface

Chen¹,

Yu²,

Su³

et al. 2013

Opt. Express

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The dynamics of a water jet on a flat free surface are investigated using a nanosecond pulsed laser for creating an oscillating bubble with different depths beneath the free surface. A thin jet is shown to deform a crater surface resulted from surface depression and cause a circular ring-shaped crater on the connection surface between the crater of surface depression and the thin jet. The collapse of this circular ring-shaped crater is proposed to the crown-like formation around a thick jet. The evolution of the bubble depth suggests a classification of four distinctive ranges of the bubble depths: non-crown formation when the parameter of bubble depth over the maximum bubble radius γ ≤ 0.5, unstable crown formation when 0.5 ≤ γ ≤ 0.6, crown-like structure with a complete crown wall when 0.6 ≤ γ ≤ 1.1, and non-crown formation when 1.1 ≤ γ. Furthermore, the orientation of the crown wall gradually turns counterclockwise to vertical direction with increasing γ from 0.5 to 1.1, implying a high correlation between the orientation of the crown wall and the depth of the bubble. This correlation is explained and discussed by the directional change of the jet eruption from the collapse of circular ring-shaped crater.

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Section: Introductionsupporting

confidence: 68%

Section: Introductionsupporting

confidence: 64%

Section: Resultsmentioning

confidence: 77%

Section: Resultsmentioning

confidence: 84%

See 2 more Smart Citations

Exploration of water jet generated by Q-switched laser induced water breakdown with different depths beneath a flat free surface

Chen¹,

Yu²,

Su³

et al. 2013

Opt. Express

View full text Add to dashboard Cite

show abstract

“…They inferred that the dominant interaction mechanism between the bubbles is due to the mutual interaction between the bubbles. Pain et al [9] conducted experiments * badarinath@iith.ac.in to illustrate the interaction of a stationary bubble with an oscillating bubble and found that this interaction leads to a jet in the stationary bubble with a velocity up to 250 m s −1 . Here, the stationary bubble was trapped inside a droplet before creating the oscillating bubble.…”

mentioning

confidence: 99%

Letter: Entrapment and interaction of an air bubble with an oscillating cavitation bubble

2018

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The mechanism of the formation of an air bubble due to an oscillating cavitation bubble in its vicinity is reported from an experimental study using high-speed imaging. The cavitation bubble is created close to the free surface of water using a low-voltage spark circuit comprising two copper electrodes in contact with each other. Before the bubble is created, a third copper wire is positioned in contact with the free surface of water close to the two crossing electrodes. Due to surface tension at the triple point (wire-water-air) interface, a small dip is observed in the free surface at the point where the wire is immersed. When the cavitation bubble is created, the bubble pushes at the dip while expanding and pulls at it while collapsing. The collapse phase leads to the entrapment of an air bubble at the wire immersion point. During this phase, the air bubble undergoes a 'catapult' effect, i.e., it expands to a maximum size and then collapses with a microjet at the free surface. To the best of our knowledge, this mechanism has not been reported so far. A parametric study is also conducted to understand the effects of wire orientation and bubble distance from the free surface.

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Experimental evaluation of methodologies for single transient cavitation bubble generation in liquids

et al. 2021

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Single bubble dynamics are of fundamental importance for understanding the underlying mechanisms in liquid–vapor transition phenomenon known as cavitation. In the past years, numerous studies were published and results were extrapolated from one technique to another and further on to “real-world” cavitation. In the present paper, we highlight the issues of using various experimental approaches to study the cavitation bubble phenomenon and its effects. We scrutinize the transients bubble generation mechanisms behind tension-based and energy deposition-based techniques and overview the physics behind the bubble production. Four vapor bubble generation methods, which are most commonly used in single bubble research, are directly compared in this study: the pulsed laser technique, a high- and low-voltage spark discharge and the tube arrest method. Important modifications to the experimental techniques are implemented, demonstrating improvement of the bubble production range, control and repeatability. Results are compared to other similar techniques from the literature, and an extensive report on the topic is given in the scope of this work. Simple-to-implement techniques are presented and categorized herein, in order to help with future experimental design. Repeatability and sphericity of the produced bubbles are examined, as well as a comprehensive overview on the subject, listing the bubble production range and highlighting the attributes and limitation for the transient cavitation bubble techniques. Graphic abstract

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Jets in quiescent bubbles caused by a nearby oscillating bubble

Cited by 38 publications

References 29 publications

Exploration of water jet generated by Q-switched laser induced water breakdown with different depths beneath a flat free surface

Exploration of water jet generated by Q-switched laser induced water breakdown with different depths beneath a flat free surface

Letter: Entrapment and interaction of an air bubble with an oscillating cavitation bubble

Experimental evaluation of methodologies for single transient cavitation bubble generation in liquids

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