Towards a phenomenological model on the deformation and orientation dynamics of finite-sized bubbles in both quiescent and turbulent media

Masuk, Ashik Ullah Mohammad; Qi, Yanyuan; Salibindla, Ashwanth; Ni, Rui

doi:10.1017/jfm.2021.390

Cited by 5 publications

(2 citation statements)

References 62 publications

(85 reference statements)

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“…So far, most studies of bubble breakup focus primarily on large-scale quantities such as the size (Hesketh 1987;Deane & Stokes 2002;Rodríguez-Rodríguez, Martínez-Bazán & Montañés 2003;Vejražka, Zedníková & Stanovský 2018;Yi et al 2022Yi et al , 2023, the aspect ratio (Stone, Bentley & Leal 1986;Kang & Leal 1989;Lu & Tryggvason 2008;Ravelet, Colin & Risso 2011;Masuk et al 2021a;Masuk, Salibindla & Ni 2021b), the total surface area (Legendre, Zenit & Velez-Cordero 2012;Dodd & Ferrante 2016), and the low-order modes of spherical harmonics of the bubble (Magnaudet, Takagi & Legendre 2003;Perrard et al 2021) without considering the small-scale local interfacial deformation that could carry important clues on how bubbles react to the collision with sub-bubble-scale eddies. Therefore, in this work, we report the experimental measurements of the bubble local deformation by leveraging the full three-dimensional (3-D) reconstruction of bubble geometry.…”

Section: Introductionmentioning

confidence: 99%

“…2022, 2023), the aspect ratio (Stone, Bentley & Leal 1986; Kang & Leal 1989; Lu & Tryggvason 2008; Ravelet, Colin & Risso 2011; Masuk et al. 2021 a ; Masuk, Salibindla & Ni 2021 b ), the total surface area (Legendre, Zenit & Velez-Cordero 2012; Dodd & Ferrante 2016), and the low-order modes of spherical harmonics of the bubble (Magnaudet, Takagi & Legendre 2003; Perrard et al. 2021) without considering the small-scale local interfacial deformation that could carry important clues on how bubbles react to the collision with sub-bubble-scale eddies.…”

Section: Introductionmentioning

confidence: 99%

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Breaking bubbles across multiple time scales in turbulence

Qi,

Xu,

Tan

et al. 2024

J. Fluid Mech.

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The familiar process of bubbles generated via breaking waves in the ocean is foundational to many natural and industrial applications. In this process, large pockets of entrained gas are successively fragmented by the ambient turbulence into smaller and smaller bubbles. The key question is how long it takes for the bubbles to reach terminal sizes for a given system. Despite decades of effort, the reported breakup time from multiple experiments differs significantly. Here, to reconcile those results, rather than focusing on one scale, we measure multiple time scales associated with the process through a unique experiment that resolves bubbles’ local deformation and curvature. The results emphasize that the scale separation among various time scales is controlled by the Weber number, similar to how the Reynolds number determines the scale separation in single-phase turbulence, but shows a distinct transition at a critical Weber number.

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