Title of article :
Geometriceffectsof90-degreeElbowinthedevelopmentofinterfacialstructuresinhorizontalbubblyflowOriginalResearchArticle
Author/Authors :
SeungjinKim، نويسنده , , JungHanPark، نويسنده , , GunolKojasoy، نويسنده , , JosephM.Kelly، نويسنده , , ShawnO.Marshall، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2007
Abstract :
Presentstudyinvestigatesthegeometriceffectsofflowobstructiononthedistributionoflocaltwo-phaseflowparametersandtheirtransportcharacteristicsinhorizontalbubblyflow.Theroundglasstubesof50.3mmininnerdiameterareemployedastestsections,alongwhicha90-degreeElbowislocatedatL/D=206.6fromthetwo-phasemixtureinlet.Intotal,15differentflowconditionsareexaminedwithintheair–waterbubblyflowregime.Thedetailedlocaltwo-phaseflowparametersareacquiredbythedouble-sensorconductivityprobeatfourdifferentaxiallocations.Theeffectofelbowisfoundtobeevidentinboththedistributionoflocalparametersandtheirdevelopment.Theelbowclearlypromotesbubbleinteractionsresultinginsignificantchangesininterfacialareaconcentration.Itisalsofoundthattheelbow-effectpropagatestobemoresignificantfurtherdownstream(L/D=250)thanimmediatedownstream(L/D=225)oftheelbow.Furthermore,itisshownthattheelbowinducessignificantoscillationsintheflowinbothverticalandhorizontaldirectionsofthetubecross-section.Characteristicgeometriceffectsduetotheexistenceofelbowarealsoshownclearlyinthetransportofone-dimensionalinterfacialareaconcentrationandvoidfractionalongtheflow.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
