Publication:
Transition to convection in single bubble diffusive growth

dc.affiliation.dptoUC3M. Departamento de Ingeniería Térmica y de Fluidoses
dc.affiliation.dptoUC3M. Departamento de Ingeniería Aeroespaciales
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Mecánica de Fluidoses
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Ingeniería Aeroespaciales
dc.contributor.authorMoreno Soto, Álvaro
dc.contributor.authorEnríquez Paz Y Puente, Óscar Raúl
dc.contributor.authorProsperetti, Andrea
dc.contributor.authorLohse, Detlef
dc.contributor.authorVan De Meer, Devaraj
dc.date.accessioned2022-02-01T13:02:50Z
dc.date.available2022-02-01T13:02:50Z
dc.date.issued2019-07-25
dc.description.abstractWe investigate the growth of gas bubbles in a water solution at rest with a supersaturation level that is generally associated with diffusive mass transfer. For CO2 bubbles, it has been previously observed that, after some time of growing in a diffusive regime, a density-driven convective flow enhances the mass transfer rate into the bubble. This is due to the lower density of the gas-depleted liquid which surrounds the bubble. In this work, we report on experiments with different supersaturation values, measuring the time t(conv) it takes for convection to dominate over the diffusion-driven growth. We demonstrate that by considering buoyancy and drag forces on the depleted liquid around the bubble, we can satisfactorily predict the transition time. In fact, our analysis shows that this onset does not only depend on the supersaturation, but also on the absolute pressure, which we corroborate in experiments. Subsequently, we study how the depletion caused by the growth of successive single bubbles influences the onset of convection. Finally, we study the convection onset around diffusively growing nitrogen N-2 bubbles. As N-2 is much less soluble in water, the growth takes much longer. However, after waiting long enough and consistent with our theory, convection still occurs as for any gas-liquid combination, provided that the density of the solution sufficiently changes with the gas concentration.en
dc.format.extent18
dc.identifier.bibliographicCitationMoreno Soto, L., Enríquez, O. R., Prosperetti, A., Lohse, D. & van der Meer, D. (2019). Transition to convection in single bubble diffusive growth. Journal of Fluid Mechanics, 871, 332–349.en
dc.identifier.doihttps://doi.org/10.1017/jfm.2019.276
dc.identifier.issn0022-1120
dc.identifier.publicationfirstpage332
dc.identifier.publicationlastpage349
dc.identifier.publicationtitleJournal of Fluid Mechanicsen
dc.identifier.publicationvolume871
dc.identifier.urihttps://hdl.handle.net/10016/34007
dc.identifier.uxxiAR/0000023849
dc.language.isoengen
dc.publisherCambridge University Pressen
dc.rights© 2019 Cambridge University Press. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.en
dc.rightsAtribución 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subject.ecienciaIngeniería Industriales
dc.subject.ecienciaMaterialeses
dc.subject.otherBubble dynamicsen
dc.subject.otherBuoyant boundary layersen
dc.subject.otherSolution-gas driveen
dc.subject.otherNatural-convectionen
dc.subject.otherWateren
dc.subject.otherSurfaceen
dc.titleTransition to convection in single bubble diffusive growthen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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