Numerical simulation of pump-intake vortices

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dc.contributor.authorRudolf, Pavelcs
dc.contributor.authorKlas, Romancs
dc.coverage.issue5cs
dc.coverage.volume92cs
dc.date.issued2015-05-06cs
dc.description.abstractPump pre-swirl or uneven flow distribution in front of the pump can induce pump-intake vortices. These phenomena result in blockage of the impeller suction space, deterioration of efficiency, drop of head curve and earlier onset of cavitation. Real problematic case, where head curve drop was documented, is simulated using commercial CFD software. Computational simulation was carried out for three flow rates, which correspond to three operating regimes of the vertical pump. The domain consists of the pump sump, pump itself excluding the impeller and the delivery pipe. One-phase approach is applied, because the vortex cores were not filled with air during observation of the real pump operation. Numerical simulation identified two surface vortices and one bottom vortex. Their position and strength depend on the pump flow rate. Paper presents detail analysis of the flow field on the pump intake, discusses influence of the vortices on pump operation and suggests possible actions that should be taken to suppress the intake vortices.en
dc.description.abstractPump pre-swirl or uneven flow distribution in front of the pump can induce pump-intake vortices. These phenomena result in blockage of the impeller suction space, deterioration of efficiency, drop of head curve and earlier onset of cavitation. Real problematic case, where head curve drop was documented, is simulated using commercial CFD software. Computational simulation was carried out for three flow rates, which correspond to three operating regimes of the vertical pump. The domain consists of the pump sump, pump itself excluding the impeller and the delivery pipe. One-phase approach is applied, because the vortex cores were not filled with air during observation of the real pump operation. Numerical simulation identified two surface vortices and one bottom vortex. Their position and strength depend on the pump flow rate. Paper presents detail analysis of the flow field on the pump intake, discusses influence of the vortices on pump operation and suggests possible actions that should be taken to suppress the intake vortices.en
dc.formattextcs
dc.format.extent1-6cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationEPJ Web of Conferences. 2015, vol. 92, issue 5, p. 1-6.en
dc.identifier.doi10.1051/epjconf/20159202077cs
dc.identifier.issn2100-014Xcs
dc.identifier.orcid0000-0003-2622-7898cs
dc.identifier.orcid0000-0002-2002-542Xcs
dc.identifier.other114865cs
dc.identifier.researcheridI-9334-2016cs
dc.identifier.researcheridY-9531-2019cs
dc.identifier.scopus54783227700cs
dc.identifier.scopus55600110700cs
dc.identifier.urihttp://hdl.handle.net/11012/201337
dc.language.isoencs
dc.publisherEDP Sciencescs
dc.relation.ispartofEPJ Web of Conferencescs
dc.relation.urihttps://www.epj-conferences.org/articles/epjconf/abs/2015/11/epjconf_efm2014_02077/epjconf_efm2014_02077.htmlcs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2100-014X/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectpumpen
dc.subjectinstake vortexen
dc.subjectpump wellen
dc.subjectCFDen
dc.subjectpump
dc.subjectinstake vortex
dc.subjectpump well
dc.subjectCFD
dc.titleNumerical simulation of pump-intake vorticesen
dc.title.alternativeNumerical simulation of pump-intake vorticesen
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-114865en
sync.item.dbtypeVAVen
sync.item.insts2025.10.14 14:52:24en
sync.item.modts2025.10.14 10:22:30en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Energetický ústavcs
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