Title of article
StabilityanalysisandnonlineardynamicsofnaturalcirculationboilingwaterreactorsOriginalResearchArticle
Author/Authors
G.V.DurgaPrasad، نويسنده , , ManmohanPandey، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
12
From page
229
To page
240
Abstract
Numerousexperimentalandnumericalinvestigationshavebeenreportedinliteratureontheeffectofvariousparametersonthedynamicsofnaturalcirculationboilingwaterreactors(NCBWRs).DifferentfindingswerereportedinliteratureregardingtheeffectofvoidreactivitycoefficientandfueltimeconstantonType-IandType-IIinstabilities.ThepresentworkcontainsstabilityanalysisandnonlineardynamicsofNCBWRusingalumpedparametermodel.Thepurposeofthestabilityanalysisistoresolvedifferent,seeminglycontradictoryparametrictrendsreportedbypreviousauthors.Stabilityanalysisforthreedifferentsystemconfigurationshasbeendoneusingthesamemathematicalmodelandcomparedwiththefindingsreportedinliterature.Ithasbeenobservedthattheeffectsofvoidreactivitycoefficientandfueltimeconstantareinfluencedbygeometricalparametersandaredifferentfordifferentsystems.Nonlineardynamicsandbifurcationshavebeenstudiednumerically,foroneofthesystemconfigurations,forboilingchannelswithandwithoutriser.Thepossibilityofexistenceofstableandunstablelimitcycles,perioddoublings,andchaoticoscillationshasbeeninvestigated.TheeffectofvoidreactivitycoefficientonthenonlineardynamicshasbeenstudiedinbothType-IandType-IIregions.IntheType-Iregion,subcriticalHopfbifurcationleadingtounstablelimitcycle,aswellassupercriticalHopfbifurcationleadingtostablelimitcyclehavebeenfound.TheboilingchannelswithandwithoutriserhavebeenobservedtoundergochaoticoscillationsunderstrongreactivityfeedbackintheType-IIregion.Ithasbeenfoundthatthepresenceofriseraggravateschaoticoscillations.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2008
Journal title
Nuclear Engineering and Design Eslah
Record number
894997
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