Comparative numerical study of single and two-phase models of nanofluid heat transfer in wavy channel

    在线阅读 下载PDF 导出详情
    摘要 Themainpurposeofthisstudyistosurveynumericallycomparisonoftwophaseandsinglephaseofheattransferandflowfieldofcopper-waternanofluidinawavychannel.Thecomputationalfluiddynamics(CFD)predictionisusedforheattransferandflowpredictionofthesinglephaseandthreedifferenttwo-phasemodels(mixture,volumeoffluid(VOF),andEulerian).Theheattransfercoefficient,temperature,andvelocitydistributionsareinvestigated.Theresultsshowthatthedifferencesbetweenthetemperaturefieldinthesinglephaseandtwo-phasemodelsaregreaterthanthoseinthehydrodynamicfield.Also,itisfoundthattheheattransfercoefficientpredictedbythesinglephasemodelisenhancedbyincreasingthevolumefractionofnanoparticlesforallReynoldsnumbers;whileforthetwo-phasemodels,whentheReynoldsnumberislow,increasingthevolumefractionofnanoparticleswillenhancetheheattransfercoefficientinthefrontandthemiddleofthewavychannel,butgraduallydecreasealongthewavychannel.
    机构地区 不详
    关键词
    出版日期 2014年07月17日(中国Betway体育网页登陆平台首次上网日期,不代表论文的发表时间)
    Baidu
    map