Flow visualization approach for periodically reversed flows

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dc.citation.journalTitleJournal of Flow Visualization and Image Processing
dc.contributor.authorBotero, F.
dc.contributor.authorGuzmán, S.
dc.contributor.authorHasmatuchi, V.
dc.contributor.authorRoth, S.
dc.contributor.authorFarhat, M.
dc.contributor.researchgroupMecánica Aplicadaspa
dc.date.accessioned2021-04-16T20:10:37Z
dc.date.available2021-04-16T20:10:37Z
dc.date.issued2012-01-01
dc.description.abstractAn unconventional tuft visualization method, along with an image processing technique adapted to the flow conditions, is proposed and implemented on a reduced-scale model of a Francis-type reversible pump-turbine in three different turbine stages such as turbine mode, runaway mode, and turbine break mode. The main goal of this technique is to visualize the complex flow developed during a rotating stall phenomenon. Fluorescent monofilament wires along with high-speed image processing and pressure sensors were installed in the narrow and vaneless gap between the impeller blades and guide vanes. Pressure fluctuations were analyzed along with tuft visualization to describe the flow with and without a rotating stall. The implemented tuft visualization method gives an adjusted qualitative description of the undergoing phenomena, making different flow behaviors such as backflow, high turbulences, recirculation, etc., evident. © 2012 by Begell House, Inc.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1729
dc.identifier.doi10.1615/JFlowVisImageProc.2014006575
dc.identifier.issn16744519spa
dc.identifier.otherSCOPUS;2-s2.0-84896459028
dc.identifier.urihttp://hdl.handle.net/10784/29173
dc.language.isoengeng
dc.publisherBegell House Inc.
dc.publisher.departmentUniversidad EAFIT. Departamento de Ingeniería Mecánicaspa
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84896459028&doi=10.1615%2fJFlowVisImageProc.2014006575&partnerID=40&md5=94b3a31efef09278b61d75abd020447e
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/1065-3090
dc.sourceJournal of Flow Visualization and Image Processing
dc.subject.keywordHydraulic turbineseng
dc.subject.keywordImage processingeng
dc.subject.keywordHigh-speed image processingeng
dc.subject.keywordImage processing techniqueeng
dc.subject.keywordPressure fluctuationeng
dc.subject.keywordPump-turbineseng
dc.subject.keywordReduced-scale modelseng
dc.subject.keywordReversible pump-turbineeng
dc.subject.keywordRotating stallseng
dc.subject.keywordTuft visualizationseng
dc.subject.keywordVisualizationeng
dc.titleFlow visualization approach for periodically reversed flowseng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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