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Waves in Guinness

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dc.contributor.author Robinson, Marguerite
dc.contributor.author Fowler, Andrew C.
dc.contributor.author Alexander, A.J.
dc.contributor.author O'Brien, Stephen B.G.
dc.date.accessioned 2016-04-27T15:35:59Z
dc.date.available 2016-04-27T15:35:59Z
dc.date.issued 2008
dc.identifier.uri http://hdl.handle.net/10344/5039
dc.description peer-reviewed en_US
dc.description.abstract We describe a simple model of a bubbly two-phase flow which is able to explain why waves propagate downward when a pint of Guinness is poured, and also how the waves are generated. Our theory involves a physically based regularization of the basic equations of the two-phase flow, using interphasic pressure difference and virtual mass terms, together with bulk or eddy viscosity terms. We show that waves can occur through an instability analogous to that which forms roll waves in inclined fluid flows, and we provide a description of the form of these waves, and compare them to observations. Our theory provides a platform for the description of waves in more general bubbly two-phase flows, and the way in which the flow breaks down to form slug flow. (C) 2008 American Institute of Physics. en_US
dc.language.iso eng en_US
dc.publisher American Institute of Physics en_US
dc.relation.ispartofseries Physics of Fluids;20, 067101
dc.relation.uri http://dx.doi.org/10.1063/1.2929369
dc.rights Copyright 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics en_US
dc.subject stability en_US
dc.subject averaged multifield model en_US
dc.subject void fraction waves en_US
dc.subject 2-phase flow en_US
dc.subject kinematic waves en_US
dc.subject bubbly flows en_US
dc.subject roll waves en_US
dc.title Waves in Guinness en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.date.updated 2016-04-27T15:08:57Z
dc.description.version PUBLISHED
dc.contributor.sponsor EI en_US
dc.contributor.sponsor SFI en_US
dc.relation.projectid SC/2001/188 en_US
dc.relation.projectid 06/MI/005
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 1132648
dc.internal.copyrightchecked Yes
dc.description.status peer-reviewed


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