简介：Inthisarticle,theinfluenceofwettabilityonaliquidflowbetweentwoparallelplanewallswerestudiedbyusingNon-EquilibriumMolecularDynamics(NEMD)simulation.Thewettabilityofthesolidsurfacescanbedescribedasthecontactangle.Theliquidflowrate,theslipvelocityandthesliplengthwhichareaffectedbythecontactanglewereinvestigated.Theresultsshowthattheboundaryconditionatamicroscopiclevelisdifferentfroma'no-slip'conditionatamacroscopiclevel.Thereexitsaslippageofaliquidflowforthehydrophobicboundaryandanexternalforceisneededtoovercomethresholdpressureforthehydrophilicboundary.Andtheorderlylayereddistributionsoftheliquidparticlesnearthehydrophilicsurfacevaryfromaplacenearthehydrophobicsurface.Thestudyindicatesthatthesurfacewettabilityplaysasignificantroleonpossibilitiesofformingaviscouslayerandthedirectslipatthesolidsurface.Theresistanceofliquidflowcanbedecreasedbychangingthewettabilityofboundarysurface.