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dc.contributor.authorHEITSCH MATTHIASen_GB
dc.contributor.authorHUHTANEN Ristoen_GB
dc.contributor.authorTECHY Zsolten_GB
dc.contributor.authorFRY Chrisen_GB
dc.contributor.authorKOSTKA Palen_GB
dc.contributor.authorNIEMI Jartoen_GB
dc.contributor.authorSCHRAMM Bertholden_GB
dc.date.accessioned2010-02-25T15:55:51Z-
dc.date.available2010-01-11en_GB
dc.date.available2010-02-25T15:55:51Z-
dc.date.created2010-01-04en_GB
dc.date.issued2010en_GB
dc.date.submitted2008-04-11en_GB
dc.identifier.citationNUCLEAR ENGINEERING AND DESIGN vol. 240 no. 2 p. 385-396en_GB
dc.identifier.issn0029-5493en_GB
dc.identifier.urihttp://www.elsevier.com/locate/nucengdesen_GB
dc.identifier.urihttp://publications.jrc.ec.europa.eu/repository/handle/JRC44698-
dc.description.abstractIn the PHARE project "Hydrogen Management for the VVER440/213" (HU2002/000-632-04-01), CFD (Computational Fluid Dynamics) calculations using GASFLOW, FLUENT and CFX were performed for the Paks NPP (Nuclear Power Plant), modelling a defined severe accident scenario which involved the release of hydrogen. The purpose of this work was to demonstrate that CFD codes could be used to model gas movement inside a containment during a severe accident. With growing experience in performing such analyses, the results support the use of CFD in assessing the risk of losing containment integrity as a result of hydrogen deflagrations. As an effective mitigation measure in such a situation, the implementation of catalytic recombiners is planned in the Paks NPP. In order to support these plans both unmitigated and recombiner-mitigated simulations were performed. These are described and selected results are compared. The codes CFX and FLUENT needed refinement to their models of wall and bulk steam condensation in order to be fully simulate the severe accident under consideration. Several CFD codes were used in parallel to model the same accident scenario in order to reduce uncertainties in the results. Previously it was considered impractical to use CFD codes to simulate a full containment subject to a severe accident extending over many hours. This was because of the expected prohibitive computing times and missing physical capabilities of the codes. This work demonstrates that, because of developments in the capabilities of CFD codes and improvements in computer power, these calculations have now become feasible.en_GB
dc.description.sponsorshipJRC.DG.F.2-Cleaner energyen_GB
dc.format.mediumCD-ROMen_GB
dc.languageENGen_GB
dc.publisherELSEVIER SCIENCE SAen_GB
dc.relation.ispartofseriesJRC44698en_GB
dc.titleCFD Evaluation of Hydrogen Risk Mitigation Measures in a VVER 440/213 Containmenten_GB
dc.typeArticles in periodicals and booksen_GB
dc.identifier.doi10.1016/j.nucengdes.2008.07.022en_GB
JRC Directorate:Energy, Transport and Climate

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