Title of article :
Post-testcalculationanduncertaintyanalysisoftheexperimentQUENCH-07withthesystemcodeATHLET-CDOriginalResearchArticle
Author/Authors :
HenriqueAustregesilo، نويسنده , , ChristineBals، نويسنده , , KlausTrambauer، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2007
Abstract :
Intheframeofdevelopmentalassessmentandcodevalidation,apost-testcalculationofthetestQUENCH-07wasperformedwithATHLET-CD.ThesystemcodeATHLET-CDisbeingdevelopedforbest-estimatesimulationofaccidentswithcoredegradationandforevaluationofaccidentmanagementprocedures.Itappliesthedetailedmodelsofthethermal-hydrauliccodeATHLETinanefficientcouplingwithdedicatedmodelsforcoredegradationandfissionproductsbehaviour.ThefirststepoftheworkwasthesimulationofthetestQUENCH-07applyingthemodellingoptionsrecommendedinthecodeUserʹsManual(referencecalculation).Theglobalresultsofthiscalculationshowedagoodagreementwiththemeasureddata.Thiscalculationwascomplementedbyasensitivityanalysisinordertoinvestigatetheinfluenceofacombinedvariationofcodeinputparametersonthesimulationofthemainphenomenaobservedexperimentally.Resultsofthissensitivityanalysisindicatethatthemainexperimentalmeasurementslaywithintheuncertaintyrangeofthecorrespondingcalculatedvalues.Amongthemaincontributorstotheuncertaintyofcoderesultsaretheheattransfercoefficientduetoforcedconvectiontosuperheatedsteam–argonmixture,thethermalconductivityoftheshroudisolationandtheexternalheaterrodresistance.UncertaintiesonmodellingofB4Coxidationdonotaffectsignificantlythetotalcalculatedhydrogenreleaserates.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
