Title of article
ComparisonoftwomodelsforapebblebedmodularreactorcorecoupledtoaBraytoncycleOriginalResearchArticle
Author/Authors
AyeletWalter، نويسنده , , AlexanderSchulz، نويسنده , , GünterLohnert، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2006
Pages
12
From page
603
To page
614
Abstract
Thepebblebedmodularreactor(PBMR)plantisapromisingconceptforinherentlysafenuclearpowergeneration.Thispaperpresentstwodynamicmodelsforthecoreofahightemperaturereactor(HTR)powerplantwithaheliumgasturbine.BoththePBMRanditspowerconversionunit(PCU)basedonathree-shaft,closedcycle,recuperative,inter-cooledBraytoncyclehavebeenmodeledwiththenetworksimulationcodeFlownex.
OnemodelutilizesacoresimulationalreadyincorporatedintheFlownexsoftwarepackage,andtheotheracoresimulationbasedonmulti-dimensionalneutronicsandthermal-hydraulics.ThereactorcoremodeledinFlownexisasimplifiedmodel,basedonazero-dimensionalpoint-kineticsapproach,whereastheothermodelrepresentsastate-of-the-artapproachforthesolutionoftheneutrondiffusionequationscoupledtoathermal-hydraulicpartdescribingrealisticfueltemperaturesduringfasttransients.Bothreactormodelswereintegratedintoacompletecycle,whichincludesaPCUmodeledinFlownex.
Flownexisathermal-hydraulicnetworkanalysiscodethatcancalculatebothsteady-stateandtransientflows.AninterestingfeatureofthecodeisitsabilitytoallowtheintegrationofanexternalprogramintoFlownexbymeansofasocalledmemorymapfile.
Thetotalplantmodelsarecomparedwitheachotherbycalculatingrepresentativetransientcasesdemonstratingthatthecouplingwithexternalmodelsworkssufficiently.Todemonstratethefeaturesoftheexternalprogramahypotheticalfastincreaseofreactivitywassimulated.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2006
Journal title
Nuclear Engineering and Design Eslah
Record number
896021
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