MECH479_project_report

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1、SimulationofflowoverairfoilCOMPARINGEXPERIMENTANDSIMULATIONOFJOUKOWSKIAIRFOILMECH479HandedinDecember3rd2008KjetilBirkelandMoe467150821AbstractThisreportisaboutcomparinglaboratorydataforaJoukowskiairfoilfromParkinsonWindtunnelandsimulationscomputedinthesoftwareFLUENTandCOMSOLmu

2、ltiphysics.Theairfoiliscamberedandmeasures0.3075m.5ThelabdataandsimulationsareperformedatReynoldsnumbersRe=4.5*10,andliftanddragcoefficientsarecomputedatanglesfrom0˚to18˚.ByplottingthecurveL/D=CL/CDyieldsthemostefficientairfoilangleofattack,foundtobeat14˚.Viscositymodelk-εandS

3、palart-AllmaraswereusedinFLUENT,andk-ωinCOMSOL.ThesimulationsinFLUENTyieldedthebestcorrelationstotheexperimentaldata.FromtheFLUENTruns,thek-εmodelhadtheoverallbestperformanceindeterminingtheliftanddragcoefficients.2Content1ABSTRACT______________________________________________

4、______________________________22CONTENT_____________________________________________________________________________33INTRODUCTION_______________________________________________________________________43.1BACKGROUND______________________________________________________________

5、_________43.2PROJECTDETAILS____________________________________________________________________43.3UNDERSTANDINGAERODYNAMICFACTORS________________________________________________44APPROACH____________________________________________________________________________54.1PREPARING

6、THEMODEL_______________________________________________________________54.2MESHING__________________________________________________________________________54.3SETTINGBOUNDARYCONDITIONS________________________________________________________64.4SETTINGUPFLUENT_________________

7、________________________________________________64.4.1Viscositymodels__________________________________________________________________75RESULTSANDDISCUSSION____________________________________________________________75.1QUALITATIVERESULTS______________________________________

8、__________________________75.2PERFORMANCECOEFFICIENTS________