Publication de 4 numéros par an
ISSN Imprimer: 0276-1459
ISSN En ligne: 1943-6181
Indexed in
COLLAPSE OF A TAYLOR BUBBLE AT A FREE SURFACE
RÉSUMÉ
Numerical simulations were performed to investigate the bursting of a Taylor bubble at a free surface and the film drainage around the bubble for both vertical and inclined liquid columns. A wide range of tube inclinations and variations of different fluid properties, such as the viscosity, density, and surface tension, are used to establish the theory behind bubble bursting phenomenon. The volume of fluid–based finite-volume formulation is used for the mass and momentum balance of the domain and interface tracking. It was observed that film drainage around the bursting bubble increases for fluids having high Morton numbers. In case of vertical tube, phenomenon is axisymmetric, but with inclination of the tube, thickness increases in lower film than the liquid above the bubble. This gives rise to an altogether different mechanism of bubble bursting inside the inclined tube and subsequently affects the film drainage time. Finally, it was observed that in the case of an inclined tube the bubble collapse takes more time at higher Morton numbers due to the formation of a spherical cap-type envelope at the advancing front of the bubble.
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Panda Santosh Kumar, Rana Basanta Kumar, Kumar Parmod, Entrainment in multifluid systems, and rotation induced occurrences, European Journal of Mechanics - B/Fluids, 96, 2022. Crossref