Determining thethicknessofliquidfilminlaminarconditiononarotatingdrum surface usingCFD
This isapioneeringpaperthatdealswiththesemi-steady-stateliquidfilmthicknessonarotatingdrum partially submergedinliquidusingCFD.TheCFDpredictionshavebeencomparedwithbothexperimental results andanalyticalsolutions.Theliquidfilmthicknessandthefilmrisingonacircularcurvedwall were monitoredforvariousr...
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| Format: | Article |
| Published: |
2008
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| Subjects: | |
| Online Access: | http://eprints.utp.edu.my/5304/1/NH_rotating_drum_chemical_engineering_science.pdf http://eprints.utp.edu.my/5304/ |
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| Institution: | Universiti Teknologi Petronas |
| Summary: | This isapioneeringpaperthatdealswiththesemi-steady-stateliquidfilmthicknessonarotatingdrum
partially submergedinliquidusingCFD.TheCFDpredictionshavebeencomparedwithbothexperimental
results andanalyticalsolutions.Theliquidfilmthicknessandthefilmrisingonacircularcurvedwall
were monitoredforvariousrpmoftherotatingdrum.The2Dsimulationswereperformedneglectingthe
end effects(assumingtherotatingdrumisverylong).Astherotatingdrumspeedwasincreased,thefilm
thickness wasfoundtoincreaseatthefilmrisingsideandattheminimumfilmthicknesspoint(topof
the rotatingdrum).Therewasneverbeenasteady-stateconditionreached,theoppositewasexpected
as awiperisusedintheCFDcalculation(sameastheexperimentalinvestigation).Theliquidthatleaves
the domainbythewiper(asoutflowboundarycondition)isforcedtoentertothedomainfromfarend
to keepthelevelofthefreesurfaceconstant. |
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