Title of article
Simulationofpellet-claddingthermomechanicalinteractionandfissiongasreleaseOriginalResearchArticle
Author/Authors
AliciaDenis، نويسنده , , AlejandroSoba، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
19
From page
211
To page
229
Abstract
Thispapersummarizesthepresentstatusofacomputercodethatdescribessomeofthemainphenomenaoccurringinanuclearfuelrodthroughoutitslife.Temperaturedistribution,thermalexpansion,elasticandplasticstrains,creep,mechanicalinteractionbetweenpelletandcladding,fissiongasrelease,gasmixing,swelling,anddensificationaremodeled.Themodularstructureofthecodeallowsfortheincorporationofmodelstosimulatedifferentphenomenaandmaterialproperties.Collapsiblerodscanbealsosimulated.
Thecodeisbidimensional,assumescylindricalsymmetryfortherodandusesthefiniteelementmethodtointegratethedifferentialequations.Thestress–strainandheatconductionproblemsarenonlinearduetoplasticityandtothetemperaturedependenceofthethermalconductivity.Thefissiongasinventoryiscalculatedwithadiffusionmodel,assumingsphericalgrainsandusingaone-dimensionalfiniteelementscheme.Pressureincrease,swellinganddensificationarecoupledwiththestressfield.
GoodresultsareobtainedforthesimulationoftheirradiationtestsofthefirstargentineprototypesofMOXfuels,wherethebambooeffectisclearlyobserved,andoftheFUMEXseriesforthefuelcenterlinetemperature,theinsiderodpressureandthefractionalgasrelease.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2003
Journal title
Nuclear Engineering and Design Eslah
Record number
894561
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