Numerical simulation of underwater air bubble formation under rolling conditions

Chen, Weixiong; Huang, Chaofeng; Wei, Pengbo; Song, Siyuan; Qiu, Binbin; Zhao, Qinpeng; Yan, Junjie

doi:10.1016/j.anucene.2020.107451

Cited by 13 publications

(1 citation statement)

References 27 publications

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“…The greater the shear rate is, the smaller the bubble volume is. Chen et al 26 found that bubbles mainly followed two steps (expansion and detachment) under rolling conditions by a numerical method. In addition, the detachment surface area and shape of bubbles change periodically because of the periodical motion of the surrounding rolling water.…”

Section: Introductionmentioning

confidence: 99%

Bubble Formation in a Swirl-Venturi Microbubble Generator

Wang

Shuai

Yang

et al. 2022

Ind. Eng. Chem. Res.

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The enhancement of the bubble evolution and detachment by the swirling liquid field were experimentally investigated with a high-speed camera and particle image velocimetry in this work. The bubble growth process is greatly compressed as the characteristic of the swirling flow field becomes prominent. When the Reynolds number is low, there are three stages the bubble has to experience, while the nucleation stage occurs twice. As the Reynolds number increases, the nucleation stages gradually reduce until they disappear, and the formation stages are also reduced to only one. Further, the bubbles depart with pulsation characteristics at a high Reynolds number, statistics show two periodicities (i.e., bubble cluster and bubble subcluster), and the bubble detachment time shows a bipolar distribution. Overall, the bubble growth is strengthened by the swirling liquid in both size and time, providing a possibility that generates small bubbles using a large diameter orifice.

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Section: Introductionmentioning

confidence: 99%