简介:Anewcoupledfiniteelementformulationisproposedtocalculateaconformationtensormodelintwocomplexflows:aplanarcontractionflowandaplanarflowaroundasymmetricallyplacedcylinder.Thecomponentsofconformationtensorarefirstcomputedtogetherwiththevelocityandpressuretodescribethechangeofmorphologyofpolymerchaincoilsinflowfields.Macroscopicquantitiesofviscoelasticflowarethencalculatedbasedontheconformationtensor.Comparisonsbetweenthenumericalsimulationsandexperimentsforstresspatternsandvelocityprofilesarecarriedouttoprovethevalidityofthemethod.