Cavitation bubble behavior inside a liquid jet

Robert, Étienne; Lettry, J.; Farhat, Mohamed; Monkewitz, Peter A.; Avellan, François

doi:10.1063/1.2744402

Cited by 41 publications

(41 citation statements)

References 25 publications

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“…Cavitation bubble dynamics have also been studied inside liquid drops in microgravity 24,25 and within a liquid jet. 26 In all cases, shock waves emitted from an individual cavitation bubble were reflected at the curved boundary, propagating back to each focal point as expansion waves, eventually producing secondary cavitation. 9 We observed cavitation phenomena even for T ex = 1000 ms, where an ejecting jet would proceed in a similar way to that developed in T ex = 5 ms, while acoustic energy was "feeding" into the inside of the drop.…”

Section: Resultsmentioning

confidence: 99%

Jet atomization and cavitation induced by interactions between focused ultrasound and a water surface

Tomita

2014

Physics of Fluids

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Atomization of a jet produced by the interaction of 1 MHz focused ultrasound with a water surface was investigated using high-speed photography. Viewing various aspects of jet behavior, threshold conditions were obtained necessary for water surface elevation and jet breakup, including drop separation and spray formation. In addition, the position of drop atomization, where a single drop separates from the tip of a jet without spraying, showed good correlation with the jet Weber number. For a set of specified conditions, multiple beaded water masses were formed, moving upwards to produce a vigorous jet. Cavitation phenomena occurred near the center of the primary drop-shaped water mass produced at the leading part of the jet; this was accompanied by fine droplets at the neck between the primary and secondary drop-shaped water masses, due to the collapse of capillary waves.

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Section: Resultsmentioning

confidence: 99%

Jet atomization and cavitation induced by interactions between focused ultrasound and a water surface

Tomita

2014

Physics of Fluids

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“…Cavitation in liquids is a common phenomenon that has been observed and used in a wide range of fields including mechanical and chemical engineering and nuclear and medical applications. 1,2,3,4,5,6,7,8,9,10,11 When cavitation occurs in a liquid under negative pressure, many gas or vapor bubbles emerge and explosively expand. The cavitation bubbles then collapse violently after the negative pressure is released, emitting high-speed liquid jets and/or shock waves.…”

Section: Introductionmentioning

confidence: 99%

Multibubble cavitation inception

Ida

2009

Physics of Fluids

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The inception of cavitation in multibubble cases is studied numerically and theoretically to show that it is different from that in single-bubble cases in several aspects. Using a multibubble model based on the Rayleigh-Plesset equation with an acoustic interaction term, we confirmed that the recently reported suppression of cavitation inception due to the interaction of non-identical bubbles can take place not only in liquid mercury but also in water, and we found that a relatively large bubble can significantly decrease the cavitation threshold pressure of a nearby small bubble. By examining in detail the transition region where the dynamics of the suppressed bubble changes drastically as the inter-bubble distance changes, we determined that the explosive expansion of a bubble under negative pressure can be interrupted and turn into collapse even though the far-field liquid pressure well exceeds the bubble's threshold pressure. Numerical results suggest that the interruption of expansion occurs when the bubble radius is exceeded by the instantaneous unstable equilibrium radius of the bubble determined using the total pressure acting on the bubble. When we extended the discussion to systems of larger numbers of bubbles, we found that a larger number of bubbles have a stronger suppression effect. The present findings would be useful in understanding the complex behavior of cavitation bubbles in practical applications where in general many cavitation nuclei exist and may interact with each other.Comment: 14 pages, 16 figures, RevTEX

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“…Laser- induced bubbles were generated by a Q-switch Nd:YAG laser providing a 5-ns pulse at a wavelength of 532 nm. 21 The energy per pulse, E laser , was varied between 3.2 and 10.6 mJ. For spark-induced bubbles, platinum electrodes with a diameter of 0.3 mm and a gap of 0.075 mm were used.…”

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confidence: 99%

Evidence for hydrogen generation in laser- or spark-induced cavitation bubbles

Sato

Tinguely

Oizumi³

et al. 2013

Applied Physics Letters

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Analysis of spatially resolved Z-pinch spectra to investigate the nature of "bright spots" Phys. Plasmas 20, 022707 (2013) Two-dimensional space-resolved emission spectroscopy of laser ablation plasma in water J. Appl. Phys. 113, 053302 (2013) Direct evidence of mismatching effect on H emission in laser-induced atmospheric helium gas plasma J. Appl. Phys. 113, 053301 (2013) "Water window" sources: Selection based on the interplay of spectral properties and multilayer reflection bandwidth Appl. Phys. Lett. 102, 041117 (2013) Additional information on Appl. Phys. Lett.

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Cavitation bubble behavior inside a liquid jet

Cited by 41 publications

References 25 publications

Jet atomization and cavitation induced by interactions between focused ultrasound and a water surface

Jet atomization and cavitation induced by interactions between focused ultrasound and a water surface

Multibubble cavitation inception

Evidence for hydrogen generation in laser- or spark-induced cavitation bubbles

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