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research article

Simulation of bubble expansion and collapse in the vicinity of a free surface

Koukouvinis, P.
•
Gavaises, M.
•
Supponen, O.  
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2016
Physics Of Fluids

The present paper focuses on the numerical simulation of the interaction of laser-generated bubbles with a free surface, including comparison of the results with instances from high-speed videos of the experiment. The Volume Of Fluid method was employed for tracking liquid and gas phases while compressibility effects were introduced with appropriate equations of state for each phase. Initial conditions of the bubble pressure were estimated through the traditional Rayleigh Plesset equation. The simulated bubble expands in a non-spherically symmetric way due to the interference of the free surface, obtaining an oval shape at the maximum size. During collapse, a jet with mushroom cap is formed at the axis of symmetry with the same direction as the gravity vector, which splits the initial bubble to an agglomeration of toroidal structures. Overall, the simulation results are in agreement with the experimental images, both quantitatively and qualitatively, while pressure waves are predicted both during the expansion and the collapse of the bubble. Minor discrepancies in the jet velocity and collapse rate are found and are attributed to the thermodynamic closure of the gas inside the bubble. Published by AIP Publishing.

  • Details
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Type
research article
DOI
10.1063/1.4949354
Web of Science ID

WOS:000377709500008

Author(s)
Koukouvinis, P.
Gavaises, M.
Supponen, O.  
Farhat, M.  
Date Issued

2016

Publisher

Amer Inst Physics

Published in
Physics Of Fluids
Volume

28

Issue

5

Article Number

052103

Subjects

FNS

•

Flash and Splash

Note

FNS ; Flash and Splash

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LMH  
Available on Infoscience
July 19, 2016
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/127747
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