Title of article
Heattransferintwo-componentinternalmistcooling:PartII.MechanisticmodelingOriginalResearchArticle
Author/Authors
V.Novak، نويسنده , , D.L.Sadowski، نويسنده , , K.G.Schoonover، نويسنده , , S.Shin، نويسنده , , S.I.Abdel-Khalik، نويسنده , , S.M.Ghiaasiaan، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
8
From page
2351
To page
2358
Abstract
Thepredictionofamechanistic,three-dimensional,two-phaseflowmodeliscomparedwithexperimentalheattransferdatapresentedintheexperimentalpartofthisstudyforsteady,internal,nozzle-generated,gas/liquidmistflowinverticalchannels.ThemechanisticmodelisbasedonthemodificationoftheKIVA-3Vcomputercode.TheKIVA-3Vcodehasbeenmodifiedtosolvetheheatconductionequationinthesurroundingstructurewitheithersteadyorpulsedheatgenerationsimultaneouslywiththefluidtransportequations,andallowmodelingofthevariouschannelgeometriesanddropletinjectionmethods.Amongthenumericallyexaminedoperatinganddesignparametersare:theliquidatomizationnozzledesign,heatflux,carriergasvelocityandinlettemperature,liquidmassfractionatinlet,andflowdirection.Comparisonismadebetweentheexperimentaldataforwallandfluidbulktemperaturesandheattransfercoefficients,andthepredictionsofthenumericalmodel.Overall,reasonableagreementisobtainedfordownwardmistflow,inparticularatmoderateheatfluxes;athighheatfluxes,themodelslightlyunderpredictsthelocalheattransfercoefficients.Forupwardmistflow,themodelunderpredictsthelocalheattransfercoefficientstypicallybyabout20%,andappearstopredictdryoutatthetestsectionexitearlierthanexperiment.Someparametricandsensitivitycalculationresultsarealsopresentedanddiscussed.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2008
Journal title
Nuclear Engineering and Design Eslah
Record number
895191
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