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dc.contributor.authorChen, CHen
dc.contributor.authorHallmark, Barten
dc.contributor.authorDavidson, JFen
dc.date.accessioned2019-05-23T23:30:23Z
dc.date.available2019-05-23T23:30:23Z
dc.identifier.issn0009-2509
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/293077
dc.description.abstractExperiments and theory concern the behaviour of a small bubble carried through an orifice by a very viscous liquid. The liquid was polybutene oil, of viscosity about 70 Pa s, i.e. 70,000 times that of water. The Reynolds number of the flow is substantially less than one, hence the flow pattern is approximately radial flowing into, and away from, the orifice. These flow patterns have profound effects on the shape of an entrained bubble. On the upstream side, the acceleration of the liquid, as it approaches the orifice, causes elongation of the bubble since the front of the bubble moves faster than the back. On the downstream side, the reverse occurs: the back of the bubble moves fast than the front. Thus the height of the bubble diminishes as it moves away from the orifice, leading to the formation of a ‘crescent-moon’ shape. The shape of these bubbles can be predicted by considering the motion of a droplet of the same liquid replacing the bubble: the resulting geometric theory gives good predictions of bubble deformation approaching the orifice and of ‘crescent-moon’ formation downstream of the orifice.
dc.description.sponsorshipThe work was supported by EPSRC contract number EP/N00230X/1.
dc.languageenen
dc.publisherElsevier BV
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleThe motion and shape of a bubble in highly viscous liquid flowing through an orificeen
dc.typeArticle
prism.publicationNameChemical Engineering Scienceen
dc.identifier.doi10.17863/CAM.40229
dcterms.dateAccepted2019-05-11en
rioxxterms.versionofrecord10.1016/j.ces.2019.05.021en
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2019-05-11en
dc.identifier.eissn1873-4405
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEPSRC (EP/N00230X/1)
cam.issuedOnline2019-05-11en
cam.orpheus.successThu Jan 30 10:44:45 GMT 2020 - Embargo updated*
rioxxterms.freetoread.startdate2020-05-11


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Attribution-NonCommercial-NoDerivatives 4.0 International
Except where otherwise noted, this item's licence is described as Attribution-NonCommercial-NoDerivatives 4.0 International