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dc.contributor.authorGumulya, Monica
dc.contributor.authorUtikar, Ranjeet
dc.contributor.authorEvans, G.
dc.contributor.authorJoshi, J.
dc.contributor.authorPareek, V.
dc.date.accessioned2017-04-28T14:00:07Z
dc.date.available2017-04-28T14:00:07Z
dc.date.created2017-04-28T09:06:08Z
dc.date.issued2017
dc.identifier.citationGumulya, M. and Utikar, R. and Evans, G. and Joshi, J. and Pareek, V. 2017. Interaction of bubbles rising inline in quiescent liquid. Chemical Engineering Science. 166: pp. 1-10.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/52824
dc.identifier.doi10.1016/j.ces.2017.03.013
dc.description.abstract

© 2017 Elsevier LtdIn the buoyant rise of two bubbles arranged in an inline configuration, the trailing bubble tends to accelerate beyond its terminal velocity, due to its interaction with the wake of the preceding bubble. It is demonstrated that several different interactive behaviours could be obtained due to this acceleration. Firstly, at low values of Reynolds numbers (Re=?lVtD/µ?35), the inline configuration was found to be stable, and the two bubbles would collide and coalesce due to the velocity difference between the two. Secondly, at higher Re values (Re > 50), vorticity development around the trailing bubble causes it to deviate away from the inline configuration, thus preventing the occurrence of a head-on collision between the two bubbles. The deviation of the bubble was found occur if a certain critical velocity is exceeded by the trailing bubble. The value of the critical velocity was found to decrease with increasing Re values. Further, an increase in Eotvos number (Eo=?lgD2/s) tends to increase the critical velocity, indicating that enhanced bubble deformability actually improves the path stability of the trailing bubble. The interaction of bubbles can therefore significantly influence the tendency of the bubbles to collide and coalesce.

dc.publisherPergamon
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/DP140104510
dc.titleInteraction of bubbles rising inline in quiescent liquid
dc.typeJournal Article
dcterms.source.volume166
dcterms.source.startPage1
dcterms.source.endPage10
dcterms.source.issn0009-2509
dcterms.source.titleChemical Engineering Science
curtin.departmentDepartment of Chemical Engineering
curtin.accessStatusFulltext not available


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