Computational Fluid Dynamics Analysis of an Open-Pool Nuclear Research Reactor Core for Fluid Flow Optimization Using a Channel Box

Página do item simplificado
dc.contributor.authorScuro N.L.
dc.contributor.authorAngelo G.
dc.contributor.authorAngelo E.
dc.contributor.authorPiro M.H.A.
dc.contributor.authorUmbehaun P.E.
dc.contributor.authorTorres W.M.
dc.contributor.authorAndrade D.A.
dc.date.accessioned2024-03-12T19:12:43Z
dc.date.available2024-03-12T19:12:43Z
dc.date.issued2023
dc.description.abstract© 2022 American Nuclear Society.A 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.
dc.description.firstpage1100
dc.description.issuenumber6
dc.description.lastpage1116
dc.description.volume197
dc.identifier.doi10.1080/00295639.2022.2142437
dc.identifier.issn0029-5639
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/34244
dc.relation.ispartofNuclear Science and Engineering
dc.rightsAcesso Restrito
dc.subject.otherlanguagechannel box
dc.subject.otherlanguagecomputational fluid dynamics
dc.subject.otherlanguageflow distribution optimization
dc.subject.otherlanguageResearch reactor core
dc.titleComputational Fluid Dynamics Analysis of an Open-Pool Nuclear Research Reactor Core for Fluid Flow Optimization Using a Channel Box
dc.typeArtigo
local.scopus.citations0
local.scopus.eid2-s2.0-85144118425
local.scopus.subjectChannel boxes
local.scopus.subjectDistribution optimization
local.scopus.subjectFlow distribution
local.scopus.subjectFlow distribution optimization
local.scopus.subjectFluid-flow
local.scopus.subjectFuel assembly
local.scopus.subjectFuel plate
local.scopus.subjectOxidation effects
local.scopus.subjectResearch reactor core
local.scopus.subjectWater channels
local.scopus.updated2024-12-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85144118425&origin=inward
Arquivos
Coleções
Artigos de periódico