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Flows in periodically driven cavity (PDC): Flow structures and mixing behaviour of Newtonian, viscoelastic and reacting fluids  
Flows in periodically driven cavity (PDC): Flow structures and mixing behaviour of Newtonian, viscoelastic and reacting fluids
資料類型： Word文件
關(guān)鍵詞： Flows  periodically  driven  cavity  PDC  Flow  structures  
mixing  behaviour  Newtonian  viscoelastic  reacting  fluids  
資料大?。?/td> 598K
所屬學(xué)科： 分子表征
來(lái)源： 2007高分子材料加工國(guó)際學(xué)術(shù)會(huì)議（5.18-5.20 北京）
簡(jiǎn)介：
Flowstructuresandmixingbehaviourareimportantaspectstobeanalyzedforpolymerprocessingoperations.Mostoften,theviscoelasticnatureoffluidsandthepresenceofreactionshavetobeconsideredtoobtainacompleteunderstanding.Itisalsoknownthatkinematicmixingdominatesoverdiffusionalmixinginpolymericmaterials.Theflowofviscoelasticfluidsalsooffersanextremelyinterestingsetofproblemsandhasbeenthefocusofresearchactivitiesoverthelastfewdecades.Duetothecomplexitiesofviscoelasticfluidflow,thedifferentbenchmarkgeometrieshavebeenstudieswhichincludesuddenexpansion(Stielmeieretal.,1989),channelflow(Yamamotoetal.,2003)etc.Lid-drivencavityisonesuchgeometryandtheflowofnon-Newtonianfluidsinlid-drivencavitieshasbeenstudiedbymanyresearchers(Grilletetal.,1999).Suchkindofgeometriesareencounteredinvariouspolymerprocessingoperationsparticularlyininjectionmoldinganddiecastingareofpracticalinterest(Anderson,1999).Atimescaleincavityflowscanbeintroducedinperiodicallydrivencavities(PDC)andthesehavebeenshowntobeprototypicalmixingdevices(Anderson,1999).TheflowandmixingofNewtonianfluidsinperiodicallydrivencavitieshaverecentlybeenstudiedinourgroup(Srirametal.,2006:1,2).ThetemporalandspatialvariationsandthestreamlinepatternsfromPIVmeasurementswerecomparedwithCFDsimulationsforawiderangeofRe.Thekinematicmixingwasalsoinvestigatedanditwasfoundthattheextentofmixingincreaseswiththeamplitudeandfrequencyoftheplatemotion.
作者： S. Sriram, M. Harini, Abhijit P. Deshpande*, S. Pushpavanam
上傳時(shí)間： 2007-09-04 15:07:13
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