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Dip-coating flow in the presence of two immiscible liquids

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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.authorChampougny, Lorene Elizabeth C.
dc.contributor.authorScheid, Benoit
dc.contributor.authorKorobkin, Alexander
dc.contributor.authorRodríguez Rodríguez, Francisco Javier
dc.contributor.funderMinisterio de Economía y Competitividad (España)es
dc.date.accessioned2022-02-14T15:34:19Z
dc.date.available2022-02-14T15:34:19Z
dc.date.issued2021-07-13
dc.description.abstractDip coating is a common technique used to cover a solid surface with a thin liquid film, the thickness of which was successfully predicted by the theory developed in the 1940s by Landau & Levich (Acta Physicochem. URSS, vol. 17, 1942, pp. 141–153) and Derjaguin (Acta Physicochem. URSS, vol. 20, 1943, pp. 349–352). In this work, we present an extension of their theory to the case where the dipping bath contains two immiscible liquids, one lighter than the other, resulting in the entrainment of two thin films on the substrate. We report how the thicknesses of the coated films depend on the capillary number, on the ratios of the properties of the two liquids and on the relative thickness of the upper fluid layer in the bath. We also show that the liquid/liquid and liquid/gas interfaces evolve independently from each other as if only one liquid were coated, except for a very small region where their separation falls quickly to its asymptotic value and the shear stresses at the two interfaces peak. Interestingly, we find that the final coated thicknesses are determined by the values of these maximum shear stresses.en
dc.description.sponsorshipL.C. acknowledges funding from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement no. 882429. B.S. thanks the F.R.S-FNRS for financial support. A.A.K. thanks Universidad Carlos III de Madrid and Banco Santander for the financial support of his Chair of Excellence. J.R.-R. acknowledges the support of the Spanish Ministry of Economy and Competitiveness through grants DPI2017-88201-C3-3-R and DPI2018-102829-REDT, partly funded with European fundsen
dc.identifier.bibliographicCitationhampougny, L., Scheid, B., Korobkin, A. A., & Rodríguez-Rodríguez, J. (2021). Dip-coating flow in the presence of two immiscible liquids. Journal of Fluid Mechanics , 922, A26es
dc.identifier.doihttps://doi.org/10.1017/jfm.2021.541
dc.identifier.issn0022-1120
dc.identifier.publicationfirstpageA26-1es
dc.identifier.publicationlastpageA26-30es
dc.identifier.publicationtitleJOURNAL OF FLUID MECHANICSen
dc.identifier.publicationvolume922es
dc.identifier.urihttps://hdl.handle.net/10016/34119
dc.identifier.uxxiAR/0000030082
dc.language.isoenges
dc.publisherCambridge University Presses
dc.relation.projectIDGobierno de España. DPI2017-88201-C3-3-Res
dc.relation.projectIDGobierno de España. DPI2018-102829-REDT
dc.relation.projectIDAT-2021
dc.rights© The Author(s), 2021es
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accesses
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaIngeniería Mecánicaes
dc.subject.otherThin filmsen
dc.subject.otherCoatingen
dc.subject.otherMultiphase flowen
dc.titleDip-coating flow in the presence of two immiscible liquidses
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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