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dc.contributor.authorOzom, Bořek
dc.contributor.authorMatas, Richard
dc.contributor.authorSedláček, Jan
dc.date.accessioned2021-11-22T11:00:34Z-
dc.date.available2021-11-22T11:00:34Z-
dc.date.issued2021
dc.identifier.citationOZOM, B. MATAS, R. SEDLÁČEK, J. Simplified Experimental and Computational Fuel Rod Models for Identifying Critical Heat Flux. In 19th Conference on Power System Engineering. Plzeň: AIP Conference Proceedings, 2021. s. nestránkováno. ISBN: 978-0-7354-4067-8 , ISSN: 0094-243Xcs
dc.identifier.isbn978-0-7354-4067-8
dc.identifier.issn0094-243X
dc.identifier.uri2-s2.0-85102749270
dc.identifier.urihttp://hdl.handle.net/11025/45985
dc.description.abstractThe prediction of critical heat flux (CHF) phenomenon at atmospheric pressure was carried out using computational fluid dynamics (CFD) methods. Heat transfer experiments of flow boiling will be validated at the University of West Bohemia, where an experimental apparatus is built. The test section consists of one 3000 mm long resistance heated fuel rod imitator (HRI) with an outer diameter of 9.1 mm placed in an annular tube. Several spacer grids are used on the experimental device to hold the heated rod imitator in its position while improving the internal heat transfer. All simulations presented in this paper started with the same inlet conditions, while the heating input gradually increased until the two-phase flow reached a steady state. The successfully predicted CHF happened through a liquid sublayer dryout under very high vapor volume fractions (93+ %) which led to complete thermal isolation of the HRI. Thanks to the results of the CFD simulations, the temperature measuring system on the experimental loop could be optimized.en
dc.format8 s.cs
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherAIP Publishingen
dc.relation.ispartofseries19th Conference on Power System Engineeringen
dc.rights© 2021 Author(s).en
dc.titleSimplified Experimental and Computational Fuel Rod Models for Identifying Critical Heat Fluxen
dc.typekonferenční příspěvekcs
dc.typeConferenceObjecten
dc.rights.accessopenAccessen
dc.type.versionpublishedVersionen
dc.subject.translatedFuel rod imitatoren
dc.subject.translatedcritical heat fluxen
dc.subject.translatedCFDen
dc.identifier.doi10.1063/5.0041497
dc.type.statusPeer-revieweden
dc.identifier.document-number668075000016
dc.identifier.obd43933590
dc.project.IDTK02020033/Experimentální a výpočetní identifikace krize přestupu tepla paliva reaktorů malých výkonů, SMRcs
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