Title of article
Two-phaseflowsinporousmedia:PredictionofpressuredropsusingadiffuseinterfacemathematicaldescriptionOriginalResearchArticle
Author/Authors
F.Fichot، نويسنده , , P.Meekunnasombat، نويسنده , , J.Belloni، نويسنده , , F.Duval، نويسنده , , A.Garcia، نويسنده , , M.Quintard، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
12
From page
1887
To page
1898
Abstract
Intheframeworkofitsresearchprogrammeonseverenuclearreactoraccidents,theInstitutdeRadioprotectionetdeSûretéNucléaire(IRSN)investigatesthewaterfloodingofanoverheatedporousbed,wherecomplextwo-phaseflowsarelikelytoexist.Abetterunderstandingoftheflowattheporelevelappearstobenecessaryinordertojustifyandimproveclosurelawsofmacroscopicmodels.Toinvestigatethelocalfeaturesofatwo-phaseflowincomplexgeometries,twoalternativewaysareavailable:experimentswithhighaccuracylocalmeasurementsordirectnumericalsimulation(DNS)oftheflowsinsmall-scalevolumes.Withintheframeworkofthesecondgradienttheory,diffuseinterfacemodelscanbederivedforbothsingle-componentandbinaryfluids.ThelattermodelisoftenreferredtoastheCahn–Hilliardmodel.Inthispaper,theCahn–Hilliardmodelisusedtosimulateimmiscibletwo-phaseflowsinarepresentativegeometryofaparticlebed.Theresultsareusedtocharacterizetheconfigurationofthephasesandpossibleflowregimesasafunctionofthesaturation.Correlationsfortherelativepermeabilitiesofeachphaseasafunctionofsaturationarealsopresented.Theresultsarediscussedandcomparedwithclassicalcorrelations.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2007
Journal title
Nuclear Engineering and Design Eslah
Record number
941369
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