Simulation of the Dynamics of a Rising Bubble

In this paper, we perform direct numerical simulation of the ascent of an initially resting air bubble in water without a current. For comparison with the experiment, a complicated initial bubble shape corresponding to the experimental one is taken. Changes in the shape of the bubble during the asce...

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Bibliographic Details
Published inFluid dynamics Vol. 58; no. 7; pp. 1352 - 1358
Main Authors Zotova, A. N., Kandaurov, A. A., Troitskaya, Yu. I., Sergeev, D. A.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.12.2023
Springer Nature B.V
Subjects
Air bubbles
Classical and Continuum Physics
Classical Mechanics
Direct numerical simulation
Engineering Fluid Dynamics
Fluid- and Aerodynamics
Mathematical models
Numerical models
Physics
Physics and Astronomy
rising bubble
direct numerical simulation
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Summary:In this paper, we perform direct numerical simulation of the ascent of an initially resting air bubble in water without a current. For comparison with the experiment, a complicated initial bubble shape corresponding to the experimental one is taken. Changes in the shape of the bubble during the ascent process that are obtained as a result of numerical modeling are close to experimental changes in the shape of the bubble. For comparison with the results of numerical simulations available in publications, a rising bubble with an initially spherical shape is simulated. During the ascent process, the shape of the bubble is found to be at first close to elliptical and experiences oscillations. However, then it becomes more complex: a “tail” appears in the lower part of the bubble. This mode of rising-bubble dynamics is confirmed by published results of numerical simulations.
ISSN:0015-4628
1573-8507
DOI:10.1134/S0015462823602188