Experimental and numerical study of laser-induced secondary jetting

Cerbus, Rory; Chraïbi, Hamza; Tondusson, Marc; Petit, S.; Soto, Dan; Devillard, Raphaël; Delville, Jean‐Pierre; Kellay, Hamid

doi:10.1017/jfm.2021.1117

Cited by 4 publications

(2 citation statements)

References 43 publications

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“…2021; Cerbus et al. 2022), elastic boundaries (Brujan et al. 2001; Klaseboer & Khoo 2004 b ), fluid–fluid interfaces (Klaseboer & Khoo 2004 a ; Orthaber et al.…”

Section: Introductionmentioning

confidence: 99%

“…Bubble dynamics in an infinite/semi-infinite liquid domain has been widely and extensively studied in the literature, including interactions with rigid walls (Hsiao et al 2014;Brujan et al 2018;Saini et al 2022;Zeng, An & Ohl 2022;Zhang et al 2023a), a water-air free surface (Kang & Cho 2019;Bempedelis et al 2021;Saade et al 2021;Cerbus et al 2022), elastic boundaries (Brujan et al 2001;Klaseboer & Khoo 2004b), fluid-fluid interfaces (Klaseboer & Khoo 2004a;Orthaber et al 2020), adjacent bubbles (Han et al 2016;Tomita & Sato 2017;Luo, Xu & Khoo 2021), suspended particles (Poulain et al 2015;Ren et al 2022) and more. Of particular interest are the bubble collapse patterns and jetting behaviours in different situations.…”

Section: Introductionmentioning

confidence: 99%

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Cavitation bubble dynamics inside a droplet suspended in a different host fluid

Li,

Zhao,

Zhang

et al. 2024

J. Fluid Mech.

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In this paper, we present a theoretical, experimental and numerical study of the dynamics of cavitation bubbles inside a droplet suspended in another host fluid. On the theoretical side, we provided a modified Rayleigh collapse time and natural frequency for spherical bubbles in our particular context, characterized by the density ratio between the two liquids and the bubble-to-droplet size ratio. Regarding the experimental aspect, experiments were carried out for laser-induced cavitation bubbles inside oil-in-water (O/W) or water-in-oil (W/O) droplets. Two distinct fluid-mixing mechanisms were unveiled in the two systems, respectively. In the case of O/W droplets, a liquid jet emerges around the end of the bubble collapse phase, effectively penetrating the droplet interface. We offer a detailed analysis of the criteria governing jet penetration, involving the standoff parameter and impact velocity of the bubble jet on the droplet surface. Conversely, in the scenario involving W/O droplets, the bubble traverses the droplet interior, inducing global motion and eventually leading to droplet pinch-off when the local Weber number exceeds a critical value. This phenomenon is elucidated through the equilibrium between interfacial and kinetic energies. Lastly, our boundary integral model faithfully reproduces the essential physics of the non-spherical bubble dynamics observed in the experiments. We conduct a parametric study spanning a wide parameter space to investigate bubble–droplet interactions. The insights from this study could serve as a valuable reference for practical applications in the field of ultrasonic emulsification, pharmacy, etc.

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“…2021; Cerbus et al. 2022), elastic boundaries (Brujan et al. 2001; Klaseboer & Khoo 2004 b ), fluid–fluid interfaces (Klaseboer & Khoo 2004 a ; Orthaber et al.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cavitation bubble dynamics inside a droplet suspended in a different host fluid

Li,

Zhao,

Zhang

et al. 2024

J. Fluid Mech.

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Recent progress on the jetting of single deformed cavitation bubbles near boundaries

Wang,

Zeng

et al. 2023

J Hydrodyn

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Numerical analysis of nonlinear interaction between a gas bubble and free surface in a viscous compressible liquid

2023

Physics of Fluids

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Liquid viscosity has a potential effect on bubble dynamics. This paper is concerned with bubble dynamics in a compressible viscous liquid near the free surface. The liquid–gas flow is modeled using the Eulerian finite element method coupled with the volume of fluid method. The numerical results have been shown to be in excellent agreement with those from the spherical bubble theory and experiment. Parametric studies are carried out regarding the Reynolds number Re and the stand-off parameter γd. It clearly demonstrated that the liquid viscosity inhibits bubble pulsation, jet flow, free surface jet, and bubble splitting. Quantitatively, as Reynolds number Re decreases, the maximum bubble volume, jet tip velocity, free surface spike, and crown height decrease, and the toroidal bubble splitting weakens. As the stand-off parameter γd increases, the maximum bubble volume, jet velocity, and bubble average pressure peak increase while the height of the free surface spike decreases. Close observation reveals that the free surface crown tends to disappear at small Re or large γd, further indicating the complex mechanism behind the crown spike evolution.

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Experimental and numerical study of laser-induced secondary jetting

Cited by 4 publications

References 43 publications

Cavitation bubble dynamics inside a droplet suspended in a different host fluid

Cavitation bubble dynamics inside a droplet suspended in a different host fluid

Recent progress on the jetting of single deformed cavitation bubbles near boundaries

Numerical analysis of nonlinear interaction between a gas bubble and free surface in a viscous compressible liquid

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