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Scale separation and dependence of entrainment bubble-size distribution in free-surface turbulence

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sword-2020-08-14T15:17:27.original.xml (130 B)
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Author(s)
Yu, Xiangming
•
Hendrickson, Kelli
•
Yue, Dick KP
Date Issued
2020
Journal
Journal of Fluid Mechanics
Publisher
Cambridge University Press (CUP)
Version
Final published version
Abstract
© The Author(s) 2019. We consider the size spectrum of entrained bubbles under strong free-surface turbulence (SFST). We investigate the entrainment bubble-size spectrum per unit (mean) interface area, , with dimension length, and develop a physical/mechanistic model for through energy arguments. The model obtains two distinct regimes of , separated by bubble-size scale. For bubble radius r-{0}]>, the effects of gravity dominate those of the surface tension force , and , where is the turbulence dissipation rate. For and
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution 4.0 International license
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DOI of Published Version
https://doi.org/10.1017/JFM.2019.986
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