Observation of flow structure past a full-stage axial air turbine at the nominal and off-design states

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dc.contributor.authorDuda, Daniel
dc.contributor.authorJelínek, Tomáš
dc.contributor.authorNěmec, Martin
dc.contributor.authorUruba, Václav
dc.contributor.authorYanovych, Vitalii
dc.contributor.authorŽitek, Pavel
dc.date.accessioned2021-11-01T11:00:31Z
dc.date.available2021-11-01T11:00:31Z
dc.date.issued2021
dc.description.abstract-translatedThe air flow inside single-stage test turbine is studied experimentally by Particle Image Velocimetry (PIV). Here we report the measurements results at axial-tangential plane just behind the rotor wheel at middle blade radius. We studied one nominal state and two off-design states. We discuss the applicability of resolution of our PIV system to this flow - we can distinguish the largest vortical structures in the shear layers between blade wake and jet, but the bottom part of the cascade is invisible for us at this moment. Spatial distributions of statistical moments of vorticity show a non-classical behavior at the cross-points of stator and rotor jets. We use our previously published algorithm for calculating spatial energy spectrum and display the turbulent kinetic energy colored by different length-scales of the fluctuations.en
dc.format7 s.cs
dc.format.mimetypeapplication/pdf
dc.identifier.citationDUDA, D. JELÍNEK, T. NĚMEC, M. URUBA, V. YANOVYCH, V. ŽITEK, P. Observation of flow structure past a full-stage axial air turbine at the nominal and off-design states. In AIP Conference Proceedings. Pilsen: AIP Publishing, 2021. s. 030004-1-030004-7. ISBN: 978-0-7354-4067-8 , ISSN: 0094-243Xcs
dc.identifier.document-number668075000013
dc.identifier.doi10.1063/5.0041491
dc.identifier.isbn978-0-7354-4067-8
dc.identifier.issn0094-243X
dc.identifier.obd43932687
dc.identifier.uri2-s2.0-85102726142
dc.identifier.urihttp://hdl.handle.net/11025/45599
dc.language.isoenen
dc.project.IDTN01000007/Národní centrum pro energetikucs
dc.project.IDTH02020057/Profilové turbínové mříže pro supersonická proudová polecs
dc.publisherAIP Publishingen
dc.relation.ispartofseriesAIP Conference Proceedingsen
dc.rights© authorsen
dc.rights.accessopenAccessen
dc.subject.translatedTurbineen
dc.subject.translatedParticle Image Velocimetryen
dc.subject.translatedTurbulenceen
dc.subject.translatedVorticityen
dc.titleObservation of flow structure past a full-stage axial air turbine at the nominal and off-design statesen
dc.typekonferenční příspěvekcs
dc.typeConferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen

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