This article presents direct numerical simulations of single air bubbles and bubble pairs in water (with log Mo = −10.6) with a highly parallelized code based on the Volume Of Fluid method (VOF). Systematical simulations of terminal velocity of single bubbles with a diameter ranging from 0.5–15 mm (ReB = 200–3750) show good agreement with experimental data from Clift et al. Bubbles with a diameter of 8 mm show strong realistic surface deformations. Initial white noise has been added to all simulations to create realistic starting conditions. Rise paths of the bubbles depend strongly on the boundary conditions and the wall distance. Small wall distances reduce the path radii of the bubbles leading to an increased wake shedding frequency. For bubble pairs with wobbling surfaces the phenomenon of shedding of vortices from the edges of the bubbles is observed.
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ASME 2002 Joint U.S.-European Fluids Engineering Division Conference
July 14–18, 2002
Montreal, Quebec, Canada
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-3615-0
PROCEEDINGS PAPER
3D Direct Numerical Simulation of Air Bubbles in Water at High Reynolds Number Available to Purchase
Mario Koebe,
Mario Koebe
Paderborn University, Paderborn, Germany
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Dieter Bothe,
Dieter Bothe
Paderborn University, Paderborn, Germany
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Jan Pruess,
Jan Pruess
Martin-Luther University – Halle-Wittenberg, Halle, Germany
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Hans-Joachim Warnecke
Hans-Joachim Warnecke
Paderborn University, Paderborn, Germany
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Mario Koebe
Paderborn University, Paderborn, Germany
Dieter Bothe
Paderborn University, Paderborn, Germany
Jan Pruess
Martin-Luther University – Halle-Wittenberg, Halle, Germany
Hans-Joachim Warnecke
Paderborn University, Paderborn, Germany
Paper No:
FEDSM2002-31143, pp. 823-830; 8 pages
Published Online:
February 24, 2009
Citation
Koebe, M, Bothe, D, Pruess, J, & Warnecke, H. "3D Direct Numerical Simulation of Air Bubbles in Water at High Reynolds Number." Proceedings of the ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. Volume 1: Fora, Parts A and B. Montreal, Quebec, Canada. July 14–18, 2002. pp. 823-830. ASME. https://doi.org/10.1115/FEDSM2002-31143
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