Title of article
Influenceofsubcooledboilingonout-of-phaseoscillationsinboilingwaterreactorsOriginalResearchArticle
Author/Authors
J.L.Mu?oz-Cobo، نويسنده , , S.Chiva، نويسنده , , A.Escriv?، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
16
From page
1267
To page
1282
Abstract
Inthispaper,wedevelopareducedordermodelwithmodalkineticsforthestudyofthedynamicbehaviorofboilingwaterreactors.Thismodelincludesthesubcooledboilinginthelowerpartofthereactorchannels.Newadditionalequationshavebeenobtainedforthefollowingdynamicsmagnitudes:theeffectiveinceptionlengthforsubcooledboiling,theaveragevoidfractioninthesubcooledboilingregion,theaveragevoidfractioninthebulk-boilingregion,themassfluxesattheboilingboundaryandthechannelexit,respectively,andsoon.Eachchannelhasthreenodes,oneofliquid,onewithsubcooledboiling,andonewithbulkboiling.Thereducedordermodelincludesalsoamodalkineticswiththefundamentalmodeandthefirstsubcriticalone,andtwochannelsrepresentingbothhalvesofthereactorcore.Also,inthispaper,weperformadetailedstudyofthewaytocalculatethefeedbackreactivityparameters.Themodeldisplaysout-of-phaseoscillationswhenenoughfeedbackgainisprovided.Thefeedbackgainthatisnecessarytoself-sustaintheseoscillationsisapproximatelyone-halfthegainthatisneededwhenthesubcooledboilingnodeisnotincluded.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2005
Journal title
Nuclear Engineering and Design Eslah
Record number
894923
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