• Title of article

    CFDanalysisofthermal–hydraulicbehaviorofheavyliquidmetalsinsub-channelsOriginalResearchArticle

  • Author/Authors

    X.Cheng، نويسنده , , N.I.Tak، نويسنده ,

  • Issue Information
    روزنامه با شماره پیاپی سال 2006
  • Pages
    12
  • From page
    1874
  • To page
    1885
  • Abstract
    CFDanalysiswascarriedoutforthermal–hydraulicbehaviorofheavyliquidmetalflows,especiallylead–bismutheutectic,insub-channelsofbothtriangularandsquarelattices.Effectofvariousparameters,e.g.turbulencemodelsandpitch-to-diameterratio,onthethermal–hydraulicbehaviorwasinvestigated.Amongtheturbulencemodelsselected,onlythesecondorderclosureturbulencemodelsreproducethesecondaryflow.Fortheentireparameterrangestudiedinthispaper,theamplitudeofthesecondaryflowislessthan1%ofthemeanflow.Astronganisotropicbehaviorofturbulenceisobserved.Theturbulencebehaviorissimilarinbothtriangularandsquarelattices.Theaverageamplitudeoftheturbulentvelocityfluctuationacrossthegapisabouthalfoftheshearvelocity.ItisonlyweaklydependentonReynoldsnumberandpitch-to-diameterratio.Astrongcircumferentialnon-uniformityofheattransferisobservedintightrodbundles,especiallyinsquarelattices.RelatedtotheoverallaverageNusseltnumber,CFDcodesgivesimilarresultsforbothtriangularandsquarerodbundles.ComparisonoftheCFDresultswithbundletestdatainmercuryindicatesthattheturbulentPrandtlnumberforHLMflowsinrodbundlesiscloseto1.0athighPecletnumberconditions,andincreasesbydecreasingPecletnumber.Basedonthepresentresults,the
  • Journal title
    Nuclear Engineering and Design Eslah
  • Serial Year
    2006
  • Journal title
    Nuclear Engineering and Design Eslah
  • Record number

    941307