Title of article :
InvestigationonthecharacteristicofCHFinvariousflowpatternregimesbasedonlook-uptabledataOriginalResearchArticle
Author/Authors :
D. K. Chandraker، نويسنده , , P.K.Vijayan، نويسنده , , D.Saha، نويسنده , , R.K.Sinha، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Abstract :
Thecriticalheatflux(CHF)isoneoftheimportantphenomenalimitingthemaximumrateofheattransferandhencepowerratingofnuclearreactors.Thethermalhydraulicphenomenalikepressuredrop,heattransfer,stability,etc.dependsupontheflowpatterninthesystem.TheCHFphenomenonisalsocloselyrelatedtothetwo-phaseflowpatterns.ItisimportanttoinvestigatethedependenceofCHFontheflowpatternregimestounderstandtheunderlyingmechanisms.ThepresentinvestigationrevealsthatCHFgenerallyincreaseswithmassfluxinthechurn/slugregion.However,intheannularregiontheCHFdecreaseswithincreaseinmassflux.ConsideringthedependencyoftheCHFtrendontheflowpatternregime,itwillbeusefultodevelopCHFmodels,whicharespecifictotheflowpatternregime.ThedataofCHFlook-uptablehasbeenconsideredinthisinvestigationsincethisapproachisoneofthemostreliablemethodsforthepredictionofCHFandisbeingusedinseveralbest-estimatethermal-hydraulicsystemcodes,suchasRELAP5,CATHAREandCATHENA.Thepressure,massfluxandqualityhavebeenconsideredasimportantthermalhydraulicparameterstocharacterizetheflowpatternduringCHFundervariousoperatingcondition.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
