MotionanddeformationofimmiscibledropletinplanePoiseuilleflowatlowReynoldsnumber
摘要: DropletmigrationinplanePoiseuilleflowisnumericallyinvestigatedwithadissipativeparticledynamicsmethod.Thesingledropletdeformationinthechannelflowisfirststudiedtoverifythecurrentmethodandthephysicalmodel.Theeffectoftheviscosityratiobetweenthedropletandthesolventandtheeffectoftheconfinementaresystematicallyinvestigated.Thedropletisinanoff-centerlineequilibriumpositionwithaspecificselectionoftheparameters.Alargeviscosityratiomakesthedropletlocateinanear-wallequilibriumposition,andalargecapillarynumbermakesthedropletmigratetothenear-centerlineregionofthechannel.ForthedropletmigrationatthesameCapillarynumber,thereisacriticalwidthofthechannel,whichislessthantwiceofthedropletdiameter,andthedropletwillonlymigratetothechannelcenterlineifthewidthislessthanthiscriticalvalue. ...
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