Computational fluid dynamics analysis of an open-pool nuclear research reactor core for fluid flow optimization using a channel box

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dc.contributor.authorSCURO, N.L.pt_BR
dc.contributor.authorANGELO, G.pt_BR
dc.contributor.authorANGELO, E.pt_BR
dc.contributor.authorPIRO, M.H.A.pt_BR
dc.contributor.authorUMBEHAUN, P.E.pt_BR
dc.contributor.authorTORRES, W.M.pt_BR
dc.contributor.authorANDRADE, D.A.pt_BR
dc.coverageInternacional
dc.date.accessioned2023-05-18T14:33:02Z
dc.date.available2023-05-18T14:33:02Z
dc.date.issued2023pt_BR
dc.description.abstractA channel box installation in the IEA-R1 research reactor core was numerically investigated to increase fluid flow in fuel assemblies (FAs) and side water channels (SWCs) between FAs by minimizing bypasses in specific regions of the reactor core, which is expected to reduce temperatures and oxidation effects in lateral fuel plates (LFPs). To achieve this objective, an isothermal three-dimensional computational fluid dynamics model was created using Ansys CFX to analyze fluid flow distribution in the Brazilian IEA-R1 research reactor core. All regions of the core and realistic boundary conditions were considered, and a detailed mesh convergence study is presented. Results comparing both scenarios are presented in the percentage of use of the primary circuit pump. It is indicated that 21.4% of fluid bypass to unnecessary regions can be avoided with the channel box installation, which leads to the total mass flow from the primary circuit for all FAs increasing from 68.9% (without a channel box) to 77.6% (with a channel box). For the SWCs, responsible for cooling LFPs, an increment from 9.7% to 22.4%, avoiding all nondesired cross three-dimensional effects, was observed, resulting in a more homogeneous fluid flow and vertical velocities. It was concluded that the installation of a channel box numerically indicates an expressive mass flow increase and homogeneous fluid flow distribution for flow dynamics in relevant regions. This gives greater confidence to believe that lower temperatures, and consequently oxidation effects in LFPs, can be expected with a channel box installation.pt_BR
dc.description.sponsorshipInstituto de Pesquisas Energéticas e Nucleares (IPEN)pt_BR
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada (NSERC)pt_BR
dc.description.sponsorshipIDIPEN: 01341.000396/2018pt_BR
dc.description.sponsorshipIDNSERC: 950-231328pt_BR
dc.format.extent1100-1116pt_BR
dc.identifier.citationSCURO, N.L.; ANGELO, G.; ANGELO, E.; PIRO, M.H.A.; UMBEHAUN, P.E.; TORRES, W.M.; ANDRADE, D.A. Computational fluid dynamics analysis of an open-pool nuclear research reactor core for fluid flow optimization using a channel box. <b>Nuclear Science and Engineering</b>, v. 197, n. 6, p. 1100-1116, 2023. DOI: <a href="https://dx.doi.org/10.1080/00295639.2022.2142437">10.1080/00295639.2022.2142437</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/34060.
dc.identifier.doi10.1080/00295639.2022.2142437pt_BR
dc.identifier.fasciculo6pt_BR
dc.identifier.issn0029-5639
dc.identifier.orcid0000-0002-6689-3011pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-6689-3011
dc.identifier.orcidhttps://orcid.org/0000-0002-2887-0759
dc.identifier.percentilfi38.8
dc.identifier.percentilfiCiteScore51.00
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/34060
dc.identifier.vol197pt_BR
dc.relation.ispartofNuclear Science and Engineering
dc.rightsopenAccesspt_BR
dc.subjectcomputer codes
dc.subjectfluid mechanics
dc.subjectreactor cores
dc.subjectdistribution
dc.subjectfluid flow
dc.titleComputational fluid dynamics analysis of an open-pool nuclear research reactor core for fluid flow optimization using a channel boxpt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorDELVONEI ALVES DE ANDRADE
ipen.autorWALMIR MAXIMO TORRES
ipen.autorPEDRO ERNESTO UMBEHAUN
ipen.autorNIKOLAS LYMBERIS SCURO
ipen.codigoautor1258
ipen.codigoautor188
ipen.codigoautor754
ipen.codigoautor14552
ipen.contributor.ipenauthorDELVONEI ALVES DE ANDRADE
ipen.contributor.ipenauthorWALMIR MAXIMO TORRES
ipen.contributor.ipenauthorPEDRO ERNESTO UMBEHAUN
ipen.contributor.ipenauthorNIKOLAS LYMBERIS SCURO
ipen.date.recebimento23-05
ipen.identifier.fi1.2
ipen.identifier.fiCiteScore2.1
ipen.identifier.ipendoc29684
ipen.identifier.iwosWoSpt_BR
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ipen.type.genreArtigo
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relation.isAuthorOfPublicationc1502b5a-764f-4f7b-bae0-b04b2a264aae
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relation.isAuthorOfPublication.latestForDiscovery21cc9120-e6dd-4e0d-8a42-6fe0737cada6
sigepi.autor.atividadeANDRADE, D.A.:1258:420:Npt_BR
sigepi.autor.atividadeTORRES, W.M.:188:420:Npt_BR
sigepi.autor.atividadeUMBEHAUN, P.E.:754:420:Npt_BR
sigepi.autor.atividadeSCURO, N.L.:14552:-1:Spt_BR
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