资源描述：
《Experimental Study of Evaporation in the Contact Line Region of a Thin Film of Hexane》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、ExperimentalStudyofEvaporationP.C.Wayner,Jr.intheContactLineRegionofaC.Y.Tung1ThinFilmofHexaneM.TirumalaThetransportprocessesinthecontactlineregion(junctionofevaporatingthinliquidfilm,vapor,andsubstrate)ofstationarysteady-stateevaporatingthinfilmsJ.H.Yang2ofhe
2、xanewithvariousbulkcompositionswerestudiedexperimentally.Thesub•stratetemperaturedistributionandliquidfilmthicknessprofileweremeasured,DepartmentofChemicalEngineeringanalyzed,andcomparedwithpreviousresultsonothersystems.TheresultsandEnvironmentalEngineering,de
3、monstratethatsmallchangesinthebulkcompositionsignificantlyaltertheRensselaerPolytechnicInstitute,characteristicsofthetransportprocessesinthecontactlineregion.ThecurvatureTroy,N.Y.12181gradientattheliquid-vaporinterfaceisastrongfunctionofevaporationrateandcompo
4、sition.Concentrationandtemperaturegradientsgiveinterfacialshearstressesandflowpatternsthatenhancecontactlinestability.1IntroductionInarecentsetofpublications,theuseofascanningevaporatingethanolmeniscusthathadafiniteapparentanglemicrophotometertodeterminethehea
5、ttransfercharac•werepresentedin[3,5].Inthiscase,theanalysesindicatedteristicsofastationaryevaporatingfilminthefilmthicknessthatthemaximumcurvaturewaslocatedatthecontactlinerange5<10"5mwasdescribed[1,2].Decaneandamixtureandthatfluidflowstowardsthecontactlineasa
6、resultofaof98percentdecaneplus2percenttetradecanebyweightwerecurvaturegradient.SystemIIrepresentsarelativelypurediscussed.Hereinexperimentalresultsobtainedusingevaporatingthinfilm,whichhasanapparentisothermalresearchgradehexane,technicalgradehexane,andamixture
7、contactangleequaltozero(spreadingsystem).Theorywouldof98percenthexaneplus2percentoctanearepresentedandindicatethatthemaximumcurvatureshouldoccuratafilmcomparedwithourpreviousresults.Theexperimentalresultsthicknessoftheorderof10~7—10-8m,theregionwheredemonstrat
8、ethatsignificantdifferencesinthetransportcapillarityanddisjoiningpressureareapproximatelyequal.characteristicsresultfromsmallchangesinthebulkcom•However,theexperimentalresultsindic
