Title of article
AunifiedmodelconsideringforcebalancesfordepartingvapourbubblesandpopulationbalanceinsubcooledboilingflowOriginalResearchArticle
Author/Authors
G.H.Yeoh، نويسنده , , J.Y.Tu، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
15
From page
1251
To page
1265
Abstract
Populationbalanceequationscombinedwithathree-dimensionaltwo-fluidmodelareemployedtopredictsubcooledboilingflowatlowpressureinaverticalannularchannel.TheMUltiple-SIze-Group(MUSIG)modelimplementedinCFX4.4isextendedtoaccountforthewallnucleationandcondensationinthesubcooledboilingregime.Amodelconsideringtheforcesactingondepartingbubblesattheheatedsurfaceisformulated.Thismodelprovidesthecapacityofcomplexanalysesonthebubblegrowthanddepartureforawiderangeofwallheatfluxesandflowconditions.
Comparisonofmodelpredictionsagainstlocalmeasurementsismadeforthevoidfraction,bubbleSautermeandiameterandgasandliquidvelocitiescoveringarangeofdifferentmassandheatfluxesandinletsubcoolings.Goodagreementisachievedwiththelocalradialvoidfraction,bubbleSautermeandiameterandliquidvelocityprofilesagainstmeasurements.However,significantweaknessofthemodelisevidencedinthepredictionofthevapourvelocity.WorkisinprogresstocircumventthedeficiencyoftheMUSIGboilingmodelbytheconsiderationofadditionalmomentumequationstobetterrepresentthemomentumforcesactingontherangeofbubblesizesinthebulksubcooledliquid.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2005
Journal title
Nuclear Engineering and Design Eslah
Record number
894922
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