Title of article
PredictionofthecriticalheatfluxinannularregimeinvariousverticalchannelsOriginalResearchArticle
Author/Authors
TomioOkawa، نويسنده , , AkioKotani، نويسنده , , IsaoKataoka، نويسنده , , MasanoriNaitoh، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2004
Pages
14
From page
223
To page
236
Abstract
Theaxialvariationoffilmflowrateinannularregimewasanalyzedtopredictthecriticalheatfluxinwatersaturatedflowboilinginvariousverticalchannels.Intheanalyses,severalquantitiesincludingthedepositionandentrainmentratesofdropletswereevaluatedwiththecorrelationsthatwerebasedontheseparateexperimentaldataoffilmflowrateanddropletflowrateinannularflow;modelclosurewasachievedwithoutintroducingarbitraryconstants.Thepredictedresultswerecomparedwithextensivedataofcriticalheatfluxinflowboiling.Fairlygoodagreementswereobservedforthecriticalheatfluxesinroundtubeswithuniformandaxiallynon-uniformheatingandinnon-circularshapedchannelswithoutsharpcorners.Itishenceexpectedthattheimportantprocessesfortheonsetofcriticalheatfluxconditioninannularregimeweresatisfactorilydescribedinthemodel.However,thecriticalheatfluxesweregenerallyoverestimatedinthinrectangularchannelswithsharpcorners.Thenon-uniformdistributionofliquidfilminchannelcross-sectionwouldbetheprimaryreasonofthedisagreement.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2004
Journal title
Nuclear Engineering and Design Eslah
Record number
894714
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