• Title of article

    AnexperimentalinvestigationonthecriticalheatfluxenhancementbymechanicalvibrationinverticalroundtubeOriginalResearchArticle

  • Author/Authors

    YongHoLee، نويسنده , , DaeHunKim، نويسنده , , SoonHeungChang، نويسنده ,

  • Issue Information
    روزنامه با شماره پیاپی سال 2004
  • Pages
    12
  • From page
    47
  • To page
    58
  • Abstract
    Inordertogainanunderstandingoftherelationshipbetweencriticalheatflux(CHF)andflow-inducedvibration(FIV),anexperimentalinvestigationwascarriedoutwithverticalroundtubeattheatmosphere.Inthebothconditionofdeparturefromnucleateboiling(DNB)andtheliquidfilmdryout(LFD),CHFincreasesupto12.6%withvibrationintensity,representedbyvibrationalReynoldsnumber(Rev).CHFenhancementbytubevibrationseemstocomefromthereinforcedflowturbulentmixingandtheincrementofdepositionofdropletintotheliquidfilm.Basedontheexperimentalresults,anempiricalcorrelationisproposedforthepredictionofCHFenhancementratio.ThecorrelationpredictstheCHFenhancementratio(En)withreasonableaccuracy,withanaverageerrorrateof4.5and26.5%forRMS.VibrationisaneffectivemethodforheattransferenhancementaswellasCHF.Nonetheless,theriskofsystemfailurebyFIVhasmadeitverydifficulttotakeadvantageofvibrationinheattransferfacilities.Therefore,itisnecessarytofindoutoptimalfueldesignenhancingtheCHFbutpreventingFIVdamageinanacceptablevibrationrange.
  • Journal title
    Nuclear Engineering and Design Eslah
  • Serial Year
    2004
  • Journal title
    Nuclear Engineering and Design Eslah
  • Record number

    894698