Title of article
SweepoutmodelimplementationinRELAP5/MOD3.3toimproveRCScoolantinventorycalculationduringaLBLOCAOriginalResearchArticle
Author/Authors
Yong-SooKim، نويسنده , , Byoung-UhnBae، نويسنده , , Goon-CherlPark، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2006
Pages
13
From page
309
To page
321
Abstract
AccordingtotheexperimentsoftheUpperPlenumTestFacility(UPTF)andadvancedpowerreactor1400MWe(APR1400),thesweepoutinthedowncomerhasbeenidentifiedtoplayanimportantroleindepletingthecorecoolantinventoryduringaLarge-BreakLoss-of-CoolantAccident(LBLOCA).Inordertoidentifythesweepoutmechanismandtoestimatetheamountofcoolantdischargedbysweepout,theseparate-effecttestwascarriedoutintheplatetypetestapparatus,whichwasscaleddownto1/5ofthesizeoftheAPR1400downcomer.Inaddition,thesweepoutmodelwasdevelopedbycorrelatingtheexperimentaldataonthecriticalvoidheightandthedischargeflowrateatthebreaktothevaluesofanalyticallyderivednon-dimensionalparameters.ThismodelwasimplementedinRELAP5/MOD3.3toimproveitscalculationofcoolantinventorylossduringaLBLOCA.TovalidatethemodifiedRELAP5/MOD3.3byimplementingthesweepoutmodel,thesweepoutseparate-effecttestwassimulatedbyboththeoriginalandthemodifiedRELAP5/MOD3.3.Theoriginalonepredictedthedifferentdischargeflowratesaccordingtothenodesizeofthedonorvolume,andtheseflowrateswerelargerthanthoseoftheexperiment.Ontheotherhand,themodifiedonecalculatedthedischargeflowrateandthecriticalvoidheightmuchmoresimilartothoseoftheexperimentthantheoriginalmodeldid.Inthefuture,theimprovedRELAP5/MOD3.3adoptedinanintegratedanalysissystemwillsupportamorerealisticthermalhydraulicanalysis.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2006
Journal title
Nuclear Engineering and Design Eslah
Record number
895993
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