Title of article
Anexperimentalstudyonthecriticalheatfluxforlowflowofwaterinanon-uniformlyheatedverticalrodbundleoverawiderangeofpressureconditionsOriginalResearchArticle
Author/Authors
Sang-KiMoon، نويسنده , , Se-YoungChun، نويسنده , , SeokCho، نويسنده , , Won-PilBaek، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
15
From page
2295
To page
2309
Abstract
Anexperimentalstudyofthecriticalheatflux(CHF)hasbeenperformedforawaterflowinanon-uniformlyheatedvertical3×3rodbundleunderlowflowandawiderangeofpressureconditions.TheexperimentwasespeciallyfocusedontheparametrictrendsoftheCHFandtheapplicabilityoftheconventionalCHFcorrelationstoareturn-to-powerconditionsofamainsteamlinebreakaccidentwhoseconditionsmightbealowmassflux,intermediatepressure,andahighinletsubcooling.TheeffectsofthemassfluxandpressureontheCHFarerelativelylargeandcomplicatedinthelowpressureconditions.Atahighmassfluxoralowcriticalquality,thelocalheatfluxattheCHFlocationsharplydecreaseswithanincreasinglocalcriticalquality.However,atalowmassfluxorahighcriticalquality,thelocalheatfluxattheCHFlocationshowsanearlyconstantvalueregardlessoftheincreaseofthecriticalquality.TheCHFdataattheverylowmassfluxconditionsarecorrelatedwellbythechurn-to-annularflowtransitioncriterionortheflowreversalphenomena.SeveralconventionalCHFcorrelationspredictthepresentreturn-to-powerCHFdatawithreasonableaccuracies.However,thepredictioncapabilitiesbecomeworseinaverylowmassfluxofbelowabout100kg/(m2s).
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2005
Journal title
Nuclear Engineering and Design Eslah
Record number
895945
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