Transition to convection in single bubble diffusive growth

e-Archivo Repository

Show simple item record Moreno Soto, Álvaro Enríquez Paz Y Puente, Óscar Raúl Prosperetti, Andrea Lohse, Detlef Van De Meer, Devaraj 2022-02-01T13:02:50Z 2022-02-01T13:02:50Z 2019-07-25
dc.identifier.bibliographicCitation Moreno 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.
dc.identifier.issn 0022-1120
dc.description.abstract We 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.
dc.format.extent 18
dc.language.iso eng
dc.publisher Cambridge University Press
dc.rights © 2019 Cambridge University Press. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (, which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.rights Atribución 3.0 España
dc.subject.other Bubble dynamics
dc.subject.other Buoyant boundary layers
dc.subject.other Solution-gas drive
dc.subject.other Natural-convection
dc.subject.other Water
dc.subject.other Surface
dc.title Transition to convection in single bubble diffusive growth
dc.type article
dc.subject.eciencia Ingeniería Industrial
dc.subject.eciencia Materiales
dc.rights.accessRights openAccess
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 332
dc.identifier.publicationlastpage 349
dc.identifier.publicationtitle Journal of Fluid Mechanics
dc.identifier.publicationvolume 871
dc.identifier.uxxi AR/0000023849
 Find Full text

Files in this item

*Click on file's image for preview. (Embargoed files's preview is not supported)

The following license files are associated with this item:

This item appears in the following Collection(s)

Show simple item record