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Dissolution of a CO2 spherical cap bubble adhered to a flat surface in air-saturated water

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dc.affiliation.dptoUC3M. Departamento de Ingeniería Térmica y de Fluidoses
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Mecánica de Fluidoses
dc.contributor.authorPeñas López, Pabloes
dc.contributor.authorParrales Borrero, Miguel Ángeles
dc.contributor.authorRodríguez Rodríguez, Francisco Javieres
dc.date.accessioned2018-05-28T09:36:52Z
dc.date.available2018-05-28T09:36:52Z
dc.date.issued2015-07-25
dc.description.abstractBubbles adhered to partially hydrophobic flat surfaces often attain a spherical cap shape with a contact angle much greater than zero. We address the fundamental problem of the diffusion-driven dissolution of a sessile spherical cap bubble (SCB) adhered to a flat smooth surface. In particular, we perform experiments on the dissolution of CO2 bubbles (with initial radii similar to 1 mm) immersed in air-saturated water adhered to two substrates with different levels of hydrophobicity. It is found that the contact angle dynamics plays an important role in the bubble dissolution rate. A dissolution model for a multicomponent SCB in an isothermal and uniform pressure environment is then devised. The model is based on the quasi-stationary approximation. It includes the effect of the contact angle dynamics, whose behaviour is predicted by means of a simplified model based on the results obtained from adhesion hysteresis. The presence of an impermeable substrate hinders the overall rate of mass transfer. Two approaches are considered in its determination: (a) the inclusion of a diffusion boundary layer-plate interaction model and (b) a finite-difference solution. The model solutions are compared with the experimental results, yielding fairly good agreement.en
dc.description.sponsorshipThe authors gratefully acknowledge the support of Total E&P Recherche et Développement through study agreement FR00006995, and the Spanish Ministry of Economy and Competitiveness through grant DPI2014-59292-C3-1-P.en
dc.format.extent23
dc.format.mimetypeapplication/pdf
dc.identifier.bibliographicCitationJournal of Fluid Mechanics, 775 (2015), 53-76.en
dc.identifier.doihttps://doi.org/10.1017/jfm.2015.291
dc.identifier.issn0022-1120
dc.identifier.publicationfirstpage53
dc.identifier.publicationlastpage76
dc.identifier.publicationtitleJournal of Fluid Mechanicsen
dc.identifier.publicationvolume775
dc.identifier.urihttp://hdl.handle.net/10016/26898
dc.identifier.uxxiAR/0000017170
dc.language.isoengen
dc.publisherCambridge University Pressen
dc.relation.ispartofhttp://hdl.handle.net/10016/26929
dc.relation.projectIDGobierno de España. DPI2014-59292-C3-1-Pes
dc.rights© 2015 Cambridge University Pressen
dc.rights.accessRightsopen accessen
dc.subject.ecienciaIngeniería Industriales
dc.subject.otherBubble dynamicsen
dc.subject.otherContact angle dynamicsen
dc.subject.otherContact linesen
dc.titleDissolution of a CO2 spherical cap bubble adhered to a flat surface in air-saturated wateren
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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