Title of article
BoilingexperimentsforthevalidationofdryoutmodelsusedinreactorsafetyOriginalResearchArticle
Author/Authors
PatrickSch?fer، نويسنده , , GünterLohnert، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2006
Pages
9
From page
1511
To page
1519
Abstract
Thecoolabilityoffragmentedcoriumisamajorissueinreactorsafety.Sincethelong-termcoolabilityofsuchparticlebedsislimitedbytheavailabilityofcoolantinsidethebedandnotbyheattransferlimitationsfromtheparticlestothecoolant,thepressurefieldinsidethedebrishasastrongeffectonthecoolingpotentialinmulti-dimensionalcasesasexpectedinsevereaccidentsinlightwaterreactors(LWR).Therefore,thedeterminationofthepressurefieldfortwo-phaseflowsinporousmediaisonecentralpointofinterest.
Inthiscontextsimulationmodelsandinparticulardryoutmodelsweredevelopedforreactorsafetyanalyseswhichhavetobevalidatedbyreliableexperimentaldata.Therefore,basicexperimentalinvestigationshavebeencarriedoutwithinductivelyheatedsteelballsof6or3mmdiametertoprovideadatabaseforthevalidationandmodificationofthefrictionlawsincludedinthesedryoutmodels.
Theperformedboilinganddryoutexperimentsshowclearlythatmodelswithouttheexplicitconsiderationoftheinterfacialdragcannotpredictthepressuredistributioninsideaboilingparticlebed,notevenqualitatively.Againstit,modelswithanexplicitconsiderationoftheinterfacialdragcandescribethedistributionofpressureinsideaboilingparticlebed.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2006
Journal title
Nuclear Engineering and Design Eslah
Record number
896101
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