Title of article :
PredictionofthecriticalheatfluxinannularregimeinvariousverticalchannelsOriginalResearchArticle
Author/Authors :
TomioOkawa، نويسنده , , AkioKotani، نويسنده , , IsaoKataoka، نويسنده , , MasanoriNaitoh، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2004
Abstract :
Theaxialvariationoffilmflowrateinannularregimewasanalyzedtopredictthecriticalheatfluxinwatersaturatedflowboilinginvariousverticalchannels.Intheanalyses,severalquantitiesincludingthedepositionandentrainmentratesofdropletswereevaluatedwiththecorrelationsthatwerebasedontheseparateexperimentaldataoffilmflowrateanddropletflowrateinannularflow;modelclosurewasachievedwithoutintroducingarbitraryconstants.Thepredictedresultswerecomparedwithextensivedataofcriticalheatfluxinflowboiling.Fairlygoodagreementswereobservedforthecriticalheatfluxesinroundtubeswithuniformandaxiallynon-uniformheatingandinnon-circularshapedchannelswithoutsharpcorners.Itishenceexpectedthattheimportantprocessesfortheonsetofcriticalheatfluxconditioninannularregimeweresatisfactorilydescribedinthemodel.However,thecriticalheatfluxesweregenerallyoverestimatedinthinrectangularchannelswithsharpcorners.Thenon-uniformdistributionofliquidfilminchannelcross-sectionwouldbetheprimaryreasonofthedisagreement.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
