Theoretical and Computational Fluid Dynamics
, Volume 8, Issue 1, pp 7388
First online:
Strong interaction between a buoyancy bubble and a free surface
 Q. X. WangAffiliated withDepartment of Mechanical and Production Engineering, National University of Singapore
 , K. S. YeoAffiliated withDepartment of Mechanical and Production Engineering, National University of Singapore
 , B. C. KhooAffiliated withDepartment of Mechanical and Production Engineering, National University of Singapore
 , K. Y. LamAffiliated withDepartment of Mechanical and Production Engineering, National University of Singapore
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The growth and collapse of buoyant vapor bubbles close to a free surface in an inviscid incompressible fluid is investigated in this paper. The strong interaction between the deforming bubble and the free surface is simulated numerically by a boundaryintegral method (Taib 1985; Blake et al., 1987). Improvements are made in the calculation of the singular integrals, the use of nonuniform boundary elements, and the choice of timestep size. The present numerical results agree better with the experimental observations of Blake and Gibson (1981) than previous numerical predictions for bubbles initiated at one maximum radius from the free surface. There is also concurrence of flow features with the experiments for a bubble initiated as close as half maximum radius from the free surface, where other numerical efforts have failed. The effects of buoyancy on bubbles initiated close to a free surface are also investigated. Vastly different features, depending on the distance of the bubble to the free surface and the buoyancyforce parameter, have been observed.
 Title
 Strong interaction between a buoyancy bubble and a free surface
 Journal

Theoretical and Computational Fluid Dynamics
Volume 8, Issue 1 , pp 7388
 Cover Date
 199601
 DOI
 10.1007/BF00312403
 Print ISSN
 09354964
 Online ISSN
 14322250
 Publisher
 SpringerVerlag
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 Authors

 Q. X. Wang ^{(1)}
 K. S. Yeo ^{(1)}
 B. C. Khoo ^{(1)}
 K. Y. Lam ^{(1)}
 Author Affiliations

 1. Department of Mechanical and Production Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore