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dc.contributor.authorRudolf, Pavel
dc.date.accessioned2013-05-13T13:20:56Z
dc.date.available2013-05-13T13:20:56Z
dc.date.issued2009
dc.identifier.citationApplied and Computational Mechanics. 2009, vol. 3, no. 1, p. 177-184.en
dc.identifier.issn1802-680X (Print)
dc.identifier.issn2336-1182 (Online)
dc.identifier.urihttp://www.kme.zcu.cz/acm/old_acm/full_papers/acm_vol3no1_p16.pdf
dc.identifier.urihttp://hdl.handle.net/11025/1908
dc.description.abstractSimulations of the flow in a straight diffuser were carried out for different inlet velocity profiles equivalent to the real turbine operating points. Frequencies and magnitudes of pressure pulsations of the rotating vortex rope were recorded. Two types of vortices were detected. The first one is a thin vortex with higher frequency and relatively low pressure amplitudes corresponding to higher part load turbine operation. For lower loads, further from best efficiency point, a huge vortex rotating on higher diameter appears, which is accompanied by massive pressure pulsations, but with lower frequency. Connections of these two regimes with inlet circumferential velocity component are discussed in the paper.en
dc.format8 s.cs
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherUniversity of West Bohemiaen
dc.relation.ispartofseriesApplied and Computational Mechanicsen
dc.rights© 2009 University of West Bohemia. All rights reserved.en
dc.subjecthydraulické agregátycs
dc.subjectturbínycs
dc.subjectproudění kapalinycs
dc.subjectvírycs
dc.subjectmatematická analýzacs
dc.titleConnection between inlet velocity field and diffuser flow instabilityen
dc.typečlánekcs
dc.typearticleen
dc.rights.accessopenAccessen
dc.type.versionpublishedVersionen
dc.subject.translatedhydraulic aggregatesen
dc.subject.translatedturbinesen
dc.subject.translatedflow of fluiden
dc.subject.translatedvortexesen
dc.subject.translatedmathematical analysisen
dc.type.statusPeer-revieweden
Vyskytuje se v kolekcích:Volume 3, number 1 (2009)
Volume 3, number 1 (2009)

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