Title of article
Studyofflowinstabilitiesindouble-channelnaturalcirculationboilingsystemsOriginalResearchArticle
Author/Authors
GonellaV.DurgaPrasad، نويسنده , , ManmohanPandey، نويسنده , , SantoshK.Pradhan، نويسنده , , SatishK.Gupta، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
12
From page
1750
To page
1761
Abstract
Naturalcirculationboilingsystemsconsistingofparallelchannelscanundergodifferenttypesofoscillations(in-phaseorout-of-phase)dependingonthegeometricparametersandoperatingconditions.Disturbancesinonechannelaffecttheflowinotherchannels,whichtriggersthermal–hydraulicoscillations.Inthepresentwork,themodesofoscillationunderdifferentoperatingconditionsandchannel-to-channelinteractionduringpowerfluctuationsandon-powerrefuelinginadouble-channelnaturalcirculationboilingsystemareinvestigated.ThesystemismodeledusingalumpedparametermathematicalmodelandRELAP5/MOD3.4.Parametricstudiesarecarriedoutforanequal-powerdouble-channelsystem,atdifferentoperatingconditions,withboththemodels,andtheresultsarecompared.Instabilities,non-linearoscillations,andeffectsofrecirculationloopdynamicsandgeometricparametersonthemodeofoscillations,arestudiedusingthelumpedmodel.Thetwochannelsoscillateout-of-phaseinType-Iregion,butinType-IIregion,boththemodesofoscillationareobservedunderdifferentconditions.Channel-to-channelinteractionandon-powerrefuelingstudiesarecarriedoutusingtheRELAPmodel.Athighpowers,disturbancesinonechannelsignificantlyaffectthestabilityoftheotherchannel.Duringon-powerrefueling,anear-stagnationconditionorlow-velocityreverseflowcanoccur,thepossibilityofreverseflowbeinghigheratlowerpressures.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2008
Journal title
Nuclear Engineering and Design Eslah
Record number
895132
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