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dc.contributor.authorVakarelski, Ivan Uriev
dc.contributor.authorManica, Rogerio
dc.contributor.authorLi, Erqiang
dc.contributor.authorBasheva, Elka S
dc.contributor.authorChan, Derek Y. C.
dc.contributor.authorThoroddsen, Sigurdur T.
dc.date.accessioned2018-01-28T07:01:35Z
dc.date.available2018-01-28T07:01:35Z
dc.date.issued2018-01-24
dc.identifier.citationVakarelski IU, Manica R, Li EQ, Basheva ES, Chan DYC, et al. (2018) Coalescence Dynamics of Mobile and Immobile Fluid Interfaces. Langmuir. Available: http://dx.doi.org/10.1021/acs.langmuir.7b04106.
dc.identifier.issn0743-7463
dc.identifier.issn1520-5827
dc.identifier.pmid29328665
dc.identifier.doi10.1021/acs.langmuir.7b04106
dc.identifier.urihttp://hdl.handle.net/10754/626849
dc.description.abstractCoalescence dynamics between deformable bubbles and droplets can be dramatically affected by the mobility of the interfaces with fully tangentially mobile bubble-liquid or droplet-liquid interfaces expected to accelerate the coalescence by orders of magnitudes. However, there is a lack of systematic experimental investigations that quantify this effect. By using high speed camera imaging we examine the free rise and coalescence of small air-bubbles (100 to 1300 μm in diameter) with a liquid interface. A perfluorocarbon liquid, PP11 is used as a model liquid to investigate coalescence dynamics between fully-mobile and immobile deformable interfaces. The mobility of the bubble surface was determined by measuring the terminal rise velocity of small bubbles rising at Reynolds numbers, Re less than 0.1 and the mobility of free PP11 surface by measuring the deceleration kinetics of the small bubble toward the interface. Induction or film drainage times of a bubble at the mobile PP11-air surface were found to be more than two orders of magnitude shorter compared to the case of bubble and an immobile PP11-water interface. A theoretical model is used to illustrate the effect of hydrodynamics and interfacial mobility on the induction time or film drainage time. The results of this study are expected to stimulate the development of a comprehensive theoretical model for coalescence dynamics between two fully or partially mobile fluid interfaces.
dc.description.sponsorshipThis work was supported by the King Abdullah University of Science and Technology (KAUST). D. Y. C. C. was supported by the Australian Research Council through a Discovery Project Grant No. DP170100376. We acknowledge Mr. Yuansi Tian for assistance in some of the experiments.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttp://pubs.acs.org/doi/10.1021/acs.langmuir.7b04106
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/10.1021/acs.langmuir.7b04106.
dc.subjectBubbles
dc.subjectDroplets
dc.subjectSurface mobility
dc.subjectCoalescence
dc.titleCoalescence dynamics of mobile and immobile fluid interfaces
dc.typeArticle
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalLangmuir
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
dc.contributor.institutionDepartment of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China
dc.contributor.institutionDepartment of Chemical and Pharmaceutical Engineering, Faculty of Chemistry and Pharmacy, Sofia University, Sofia, Bulgaria
dc.contributor.institutionDepartment of Mathematics, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
dc.contributor.institutionSchool of Mathematics and Statistics, University of Melbourne, Parkville, VIC 3010, Australia
kaust.personVakarelski, Ivan Uriev
kaust.personLi, Erqiang
refterms.dateFOA2019-01-12T00:00:00Z
dc.date.published-online2018-01-24
dc.date.published-print2018-02-06


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