资源描述：
《Evaporating menisci of wetting fluids》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、EvaporatingMenisciofWettingFluidsSTEVENMOOSMANANDG.M.HOMSYDepartmentofChemicalEngineering,StanfordUniversity,Stanford,California94305ReceivedFebruary18,1979;acceptedJune4,1979Wemodelthetransportprocessesoccurringinahorizontalevaporatingmeniscuswhichisaf-fectedbybothcapillarit
2、yandbymultilayeradsorption.Perturbationtheoryisusedtodescribetheprofilechangerelativetothestaticisothermalprofile.Wesolveforthisdeviationprofile,aswellasfortheevaporativefluxfromtheinterface,forarangeofvaluesappropriatetothenondimen-sionalparametersinthemodel.Theresultsclearl
3、ydemonstratethatlargeheatfluxescanoccurinthetransitionregionbetweenthecapillarymeniscusandtheadsorbedlayer.Moreover,thedevia-tionprofilepredictsathinninginthemeniscusregionwithashiftintheapparentzerotowardthegap,amuchthinnernonevaporatingadsorbedfilm,andanincreaseinapparentco
4、ntactangle.INTRODUCTIONatthesameconclusioninstudyingheattransfercharacteristicsofmenisciformedatEvaporationfromameniscuswhichwetstheexitofacapillarytube.RenkandWay-aheatedsolidsurfaceisofcriticalim-net(3-5)usedopticalinterferometryportanceinmanyheattransferprocessestodetermin
5、etheprofileofanevaporatingwhichrelyonthelatentheatofvaporiza-meniscusformedattheexitofthegapbe-tionofaliquidtoprovidehighlocalizedheattweentwohorizontalfiatplates.Byfittingfluxes,e.g.,finnedorgroovedevaporatorstheirexperimentaldatatoafourth-orderandheatpipes.Whileitiswellknow
6、nthatpolynomialanddifferentiating,theycon-systemsofthistypecanexhibithighheatcluded(3)thatsignificantincreasesincurva-transferrates,particularlyinthetransitiontureaccompaniedincreasesintheheatfluxlayerbetweentheliquidmeniscusandtheandthatthepressuregradientforflowwaswettingfi
7、lm(1),thequantitativedescrip-associatedwithagradientinthemeniscustionofthecouplingbetweenfluidflow,heatcurvature.transport,andevaporationinthisregion,Deryaguinandco-workers(6),usingtheandthedeterminationofthenondimen-dependenceofdisjoiningpressureonfilmsionalphysicalparameter
8、swhichmostaf-thickness,havearguedthatagradientinfecttheheatfluxremai
