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dc.contributor.authorWesterberg, Lars
dc.contributor.authorFarré Lladós, Josep
dc.contributor.authorLi, Jinxia
dc.contributor.authorHoglund, Erik
dc.contributor.authorCasals Terré, Jasmina
dc.contributor.otherEscola Tècnica Superior d'Enginyeries Industrial i Aeronàutica de Terrassa
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Mecànica
dc.date.accessioned2015-04-29T15:03:39Z
dc.date.available2016-04-01T00:31:06Z
dc.date.created2015-03-01
dc.date.issued2015-03-01
dc.identifier.citationWesterberg, L. [et al.]. Grease flow in an elbow channel. "Tribology letters", 01 Març 2015, vol. 57, núm. 3.
dc.identifier.issn1023-8883
dc.identifier.urihttp://hdl.handle.net/2117/27670
dc.descriptionThe final publication is available at Springer via http://dx.doi.org/10.1007/s11249-015-0469-6.
dc.description.abstractThe flow of lubricating greases in an elbow channel has been modeled and validated with velocity profiles from flow visualizations using micro-particle image velocimetry. The elbow geometry induces a non-symmetric distribution of shear stress throughout its cross section, as well as varying shear rates through the transition from the elbow inlet to the outlet. The flow has been modeled both for higher flow rates and for creep flow. The influence of the grease rheology and flow conditions to wall slip, shear banding and an observed stick-slip type of motion observed for low flow rates are presented. The effect on the flow of the applied pressure is also modeled showing that the flow is sensitive to the pressure in the angular (phi) direction of the elbow. For high pressures, it is shown that the flow is reversed adjacent to the elbow walls.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids::Reologia
dc.subject.lcshRheology
dc.subject.lcshLubrication and lubricants)
dc.subject.otherGrease flow
dc.subject.otherWall slip
dc.subject.otherShear banding
dc.subject.otherStick-slip flow
dc.subject.otherFlow separation
dc.subject.otherMicroparticle image velocimetry
dc.subject.otherDouble restriction seal
dc.subject.otherWall slip
dc.subject.otherRheo-piv
dc.subject.otherFluid
dc.subject.otherShear
dc.titleGrease flow in an elbow channel
dc.typeArticle
dc.subject.lemacReologia
dc.subject.lemacLubrificació i lubrificants
dc.identifier.doi10.1007/s11249-015-0469-6
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://link.springer.com/article/10.1007/s11249-015-0469-6/fulltext.html
dc.rights.accessOpen Access
local.identifier.drac15597887
dc.description.versionPostprint (author’s final draft)
local.citation.authorWesterberg, L.; Farré-Lladós, J.; Li, J.; Hoglund, E.; Casals, J.
local.citation.publicationNameTribology letters
local.citation.volume57
local.citation.number3


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