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dc.contributor.authorMujal Colilles, Anna
dc.contributor.authorDalziel, Stuart
dc.contributor.authorBateman Pinzón, Allen
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Hidràulica, Marítima i Ambiental
dc.date.accessioned2015-01-29T13:41:18Z
dc.date.available2015-01-29T13:41:18Z
dc.date.created2015-01
dc.date.issued2015-01
dc.identifier.citationMujal -Colilles, A.; Dalziel, S.B.; Bateman, A. Vortex rings impinging on permeable boundaries. "Physics of fluids", Gener 2015, vol. 27, núm. 1, p. 015106-1-015106-19.
dc.identifier.issn1070-6631
dc.identifier.urihttp://hdl.handle.net/2117/26161
dc.description.abstractExperiments with vortex rings impinging permeable and solid boundaries are presented in order to investigate the influence of permeability. Utilizing Particle Image Velocimetry, we compared the behaviour of a vortex ring impinging four different reticulated foams (with permeability k ~ 26 - 85 × 10-8 m2) and a solid boundary. Results show how permeability affects the stretching phenomena of the vortex ring and the formation and evolution of the secondary vortex ring with opposite sign. Moreover, permeability also affects the macroscopic no-slip boundary condition found on the solid boundary, turning it into an apparent slip boundary condition for the most permeable boundary. The apparent slip-boundary condition and the flux exchange between the ambient fluid and the foam are jointly responsible for both the modified formation of the secondary vortex and changes on the vortex ring diameter increase.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Física::Física de fluids
dc.subject.lcshVortex-motion
dc.subject.lcshPermeability
dc.subject.otherVortex rings
dc.subject.otherFoams
dc.subject.otherRotating flows
dc.subject.otherBoundary value problems
dc.subject.otherVelocimetry
dc.titleVortex rings impinging on permeable boundaries
dc.typeArticle
dc.subject.lemacVòrtexs (Hidrodinàmica)
dc.subject.lemacPermeabilitat
dc.contributor.groupUniversitat Politècnica de Catalunya. GITS - Modelització Integral de Conques i Transport de Sediments
dc.identifier.doi10.1063/1.4906504
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://scitation.aip.org/content/aip/journal/pof2/27/1/10.1063/1.4906504
dc.rights.accessOpen Access
local.identifier.drac15403799
dc.description.versionPostprint (published version)
local.citation.authorMujal -Colilles, A.; Dalziel, S.B.; Bateman, A.
local.citation.publicationNamePhysics of fluids
local.citation.volume27
local.citation.number1
local.citation.startingPage015106-1
local.citation.endingPage015106-19


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