Title of article :
Flashing-induceddensitywaveoscillationsinanaturalcirculationBWR—mechanismofinstabilityandstabilitymapOriginalResearchArticle
Author/Authors :
M.Furuya، نويسنده , , F.Inada، نويسنده , , T.H.J.J.vanderHagen، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Abstract :
Experimentswereconductedtoinvestigatetwo-phaseflowinstabilitiesduetoflashinginaboilingnaturalcirculationloopwithachimneyatlowpressure.TheSIRIUS-Nfacilitywasdesignedtohavenon-dimensionalvaluesnearlyequaltothoseoftypicalnaturalcirculationboilingwaterreactor(BWR).
Theobservedinstabilityissuggestedtobeflashing-induceddensitywaveoscillations,sincetheoscillationperiodcorrelatedwellwiththepassingtimeofsingle-phaseliquidinthechimneysectionregardlessofsystempressure,heatflux,andinletsubcooling.
Stabilitymapswereobtainedinreferencetotheinletsubcoolingandtheheatfluxatthesystempressuresof0.1,0.2,0.35,and0.5 MPa.Theflowbecamestablebelowacertainheatfluxregardlessofthechannelinletsubcooling.Thestableregionenlargedwithincreasingsystempressure.Thus,thestabilitymarginbecomeslargerinastartupprocessofareactorbypressurizingthereactorsufficientlybeforeheatingaccordingtothestabilitymap.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
