Author/Authors :
M.Andreani، نويسنده , , K.Haller، نويسنده , , M.Heitsch، نويسنده , , B.Hemstr?m، نويسنده , , I.Karppinen، نويسنده , , J.Macek، نويسنده , , J.Schmid، نويسنده , , H. Paillère، نويسنده , , I.Toth، نويسنده ,
Abstract :
Intheframeworkofthe5thEU-FWPprojectECORAthecapabilitiesofCFDsoftwarepackagesforsimulatingflowsinthecontainmentofnuclearreactorswasevaluated.FourcodeswereassessedusingtwobasictestsinthePANDAfacilityaddressingthetransportofgasesinamulti-compartmentgeometry.TheassessmentincludedafirstattempttouseBestPracticeGuidelines(BPGs)fortheanalysisoflong,large-scale,transientproblems.Duetothelargecomputationaloverheadoftheanalysis,theBPGscouldnotfullybeapplied.ItwasthusconcludedthattheapplicationoftheBPGstofullcontainmentanalysisisoutofreachwiththecurrentlyavailablecomputerpower.Ontheotherhand,CFDcodesusedwithasufficientlydetailedmeshseemtobecapabletogivereliableanswersonissuesrelevantforcontainmentsimulationusingstandardtwo-equationturbulencemodels.Developmentonturbulencemodelsisconstantlyongoing.Ifitturnsoutthatadvanced(andmorecomputationallyintensive)turbulencemodelsmaynotbeneeded,theuseoftheBPGsfor‘certified’simulationscouldbecomefeasiblewithinarelativelyshorttime.
