Title of article :
ValidationofCFDmodelsformono-andpolydisperseair–watertwo-phaseflowsinpipesOriginalResearchArticle
Author/Authors :
Th. Frank، نويسنده , , P.J.Zwart، نويسنده , , E.Krepper، نويسنده , , H.-M.Prasser، نويسنده , , D.Lucas، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Abstract :
Manyflowregimesinnuclearreactorsafety(NRS)researchandnuclearreactorengineeringarecharacterizedbywater–steamtwo-phaseflowsandrequirefortheiraccurateCFDsimulationthedevelopmentandvalidationofappropriatemultiphaseflowmodels.Thispaperispresentingmultiphaseflowmodelsforthedescriptionofmono-andpolydispersebubblyflowsintheEulerianframeworkofmultiphaseflowmodelinginANSYSCFX.Themodelsaretakingintoaccountinterphasemomentumtransferduetogoverningdragandnon-dragforces.Furthermoreincaseofapolydisperseair–waterorwater–steambubblyflowthebubblesizedistribution,bubblebreak-upandcoalescenceprocessesaswellasdifferentgasvelocitiesindependencyonthebubblediameteraretakenintoaccountinthenewlydevelopedinhomogeneousMUSIGmodel.Bothmultiphaseflowmodelsformono-andpolydispersebubblyflowshavethoroughlybeenvalidatedandcomparedtoexperimentsofMT-LoopandTOPFLOWtestfacilities(FZDresden-Rossendorf,Germany).Bestpracticeguidelines(Menter,2002)havebeenappliedinordertoallowforasystematicerrorquantificationandthoroughlyassessmentofmodelformulations.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
