Title of article
Fluidmixingandflowdistributioninaprimarycircuitofanuclearpressurizedwaterreactor—ValidationofCFDcodesOriginalResearchArticle
Author/Authors
U.Rohde، نويسنده , , T.H?hne، نويسنده , , S.Kliem، نويسنده , , B.Hemstr?m، نويسنده , , Stephan Scheuerer، نويسنده , , T.Toppila، نويسنده , , A.Aszodi، نويسنده , , I.Boros، نويسنده , , I.Farkas، نويسنده , , P.Mühlbauer، نويسنده , , L.Vyskocil، نويسنده , , J.Klepac، نويسنده , , J.Remis، نويسنده , , T.Dury، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
17
From page
1639
To page
1655
Abstract
TheEUprojectFLOMIX-Rwasaimedatdescribingthemixingphenomenarelevantforbothsafetyanalysis,particularlyinsteamlinebreakandborondilutionscenarios,andmixingphenomenaofinterestforeconomicaloperationandthestructuralintegrity.
Thisreportwillfocusonthecomputationalfluiddynamics(CFD)codevalidation.Bestpracticeguidelines(BPG)wereappliedinallCFDworkwhenchoosingcomputationalgrid,timestep,turbulencemodels,modellingofinternalgeometry,boundaryconditions,numericalschemesandconvergencecriteria.ThestrategyofcodevalidationbasedontheBPGandamatrixofCFDcodevalidationcalculationshavebeenelaborated.CFDcalculationshavebeenaccomplishedforselectedexperimentswithtwodifferentCFDcodes(CFX,FLUENT).Thematrixofbenchmarkcasescontainsslugmixingtestssimulatingthestart-upofthefirstmaincirculationpumpwhichhavebeenperformedwiththree1:5scaledfacilities:theRossendorfcoolantmixingmodelROCOM,theVattenfalltestfacilityandametalmock-upofaVVER-1000typereactor.Beforestudyingmixingintransients,ROCOMtestcaseswithsteady-stateflowconditionswereconsidered.Consideringbuoyancydrivenmixing,experimentalresultsonmixingoffluidswithdensitydifferencesobtainedatROCOMandtheFORTUMPTStestfacilitywerecomparedwithcalculations.Methodsforaquantitativecomparisonbetweenthecalculatedandmeasuredmixingscalardistributionshavebeenelaboratedandapplied.Basedonthe“bestpracticeCFDsolutions”,conclusionsontheapplicabilityofCFDforturbulentmixingproblemsinPWRweredrawnandrecommendationsonCFDmodellingweregiven.TheresultsoftheCFDcalculationsaremostlyin-betweentheuncertaintybandsoftheexperiments.Althoughnofullygrid-independentnumericalsolutionscouldbeobtained,itcanbeconcludedaboutthesuitabilityofapplyingCFDmethodsinengineeringapplicationsforturbulentmixinginnuclearreactors.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2007
Journal title
Nuclear Engineering and Design Eslah
Record number
941348
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