Title of article
FragmentationofamoltencoriumjetfallingintowaterOriginalResearchArticle
Author/Authors
JNamiech، نويسنده , , GBerthoud، نويسنده , , NCoutris، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2004
Pages
23
From page
265
To page
287
Abstract
Duringasevereaccidentofapressurizedwaternuclearreactor,alargemassofcoriumcouldpourintothevesselbottomasacompactjet.Whenthecoriummassreachesthewateratthebottomofthevessel,anintensefragmentationmayoccur.Thiscouldleadtoasignificantmixingofcoriumandwater,likelytocauseasteamexplosionwhichcoulddamagethestructures.Ananalyticalstudyhasbeenestablishedinordertoquantifythecoriumjetfragmentation.Thisstudyconsistsmainlyinmodelingthevaporflowsurroundingthejetaswellastheinstabilitywhichoccursatitsinterface.Incomparisonwithpreviousstudies,thismodelpaysparticularattentiontothejet-producedparticleswhichinteractwiththevaporflow.Acompletemodelhasbeensetupinordertocalculatethejetbreakuplengthandthegeneratedparticles’diameterundereachspecificsituationcharacterizedbyinitialconditions.Thismodelmainlyreliesuponresultsfromboundarylayertheoryandlinearinstabilitycalculations.Thefullmodel’sresultsarecomparedtoexistingexperiencesinthisfieldandafinalcorrelationoftheresultsisestablished.Agoodagreementisobtainedonthejetbreakuplength,howeverthepredictedparticlediametertendstobetoolarge.Thislastresultcouldbeexplainedbyasecondarybreakupoftheparticlesinwaterandbyalargeuncertaintyinthevaporflow.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2004
Journal title
Nuclear Engineering and Design Eslah
Record number
894717
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