Author/Authors :
S.Kudriakov، نويسنده , , F.Dabbene، نويسنده , , E.Studer، نويسنده , , A. Beccantini، نويسنده , , J.P.Magnaud، نويسنده , , H. Paillère، نويسنده , , A.Bentaib، نويسنده , , A.Bleyer، نويسنده , , J.Malet، نويسنده , , E.Porcheron، نويسنده , , C.Caroli، نويسنده ,
Abstract :
TheFrenchAtomicEnergyCommission(CEA)andtheInstituteforRadiologicalProtectionandNuclearSafety(IRSN)aredevelopingahydrogenriskanalysiscode,calledtheTONUScode,whichincorporatesbothlumped-parameter(LP)andcomputationalfluiddynamics(CFD)formulations.Inthispaperwepresentthegoverningequations,numericalstrategyandschemesusedfortheCFDapproach.
Severalbenchmarkexercisesbasedonexperimentalresultsobtainedonlarge-scalefacilities,suchasMISTRA,TOSQANandRUT,arepresented.Theyhavebeenusedasverificationandassessmentproceduresformodellingandnumericalapproachesofthecode.Specificemphasisisgiventothesensitivityanalysisofthecomputedresultswithrespecttonumericalandphysicalparameters.ThepowerfulDesign-Of-ExperimentstechniqueforsensitivityanalysisissuccessfullyappliedtotheISP47MISTRAtestcase.
TheTONUSCFDcodeispresentlyusedtosupportthehydrogenriskassessmentfortheEuropeanPressurizedReactor(EPR)plantandtoinvestigatetheimpactofthetwo-roomconceptonhydrogendistributionintheEPRcontainment.
