Title of article :
ExperimentalstudyontheReynoldsnumberdependenceofturbulentmixinginarodbundleOriginalResearchArticle
Author/Authors :
Nicol?sSilin، نويسنده , , LuisJuanic?، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2006
Abstract :
AnexperimentalstudyforReynoldsnumberdependenceoftheturbulentmixingbetweenfuel-bundlesubchannels,wasperformed.Themeasurementsweredoneonatriangulararraybundlewitha1.20pitchtodiameterrelationand10mmroddiameter,inalow-pressurewaterloop,atReynoldsnumbersbetween1.4×103and1.3×105.
Thehighaccuracyoftheresultswasobtainedbyimprovingathermaltracingtechniquerecentlydeveloped.TheReynoldsexponentonthemixingratecorrelationwasobtainedwithtwo-digitaccuracyforReynoldsnumbersgreaterthan3×103.ItwasalsofoundamarkedincreaseinthemixingrateforlowerReynoldsnumbers.
TheweaktheoreticalbaseoftheacceptedReynoldsdependencewaspointedoutinlightofthelaterfindings,aswellasitsambiguoussupportingexperimentaldata.
Thepresentresultsalsoprovideindirectinformationaboutdominantlargescaleflowpulsationsatdifferentflowregimes.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah