3D-Design-and-Simulations-of-NASA-Rotor-67

MASTER’STHESISMechanicalEngineering,2008DepartmentofTechnology,MathematicsandComputerScience2006:SM013DDesignandSimulationsofNASARotor67Author:AbdulAhadNarejoMASTER’STHESIS3DDesignandSimulationsofNASARotor67SummaryInthismaster’sthesiswork,researchhasbeencarriedouttodevelopanautomatedandparameterizedprogrammingmodelinMatlabtogenerateastandardjournalfile,whichcanreadbyGambitandproduceameshed2Dand3Dblade.Thisfilethencanbeexportedintomesh-formattedfileforfluentforfurthersimulationsandnumericalresults.Author:AbdulAhadNarejoExaminer:Dr.TomasBenoAdvisor:Dr.DavidLindströmProf.KennethErikssonProgramme:Master´sProgrammeSimulationofManufacturingProcessesSubject:MechanicalEngineeringLevel:MasterDate:June13,2008eportNumber:2006:SM01KeywordsGambit,Fluent,Matlab,residuals,priesto,segregated,coupledPublisher:UniversityWest,DepartmentofTechnology,MathematicsandComputerScience,S-46186Trollhättan,SWEDENPhone:[phone]Fax:[phone]Web:(DoctoratUniversityWest,Sweden)andProf.KennethEriksson(ProfessoratUniversityWest,Sweden)fortheircontributionsanddiscussionsfromtimetotime,tocompletethisthesiswork.SofinallyIdedicatethisworktobothofthem.3DDesignandSimulationsofNASARotor67ContentsSummary.....................................................................................................................iiPreface.......................................................................................................................iiiContents......................................................................................................................ivListofsymbols............................................................................................................viChapter1......................................................................................................................11Introduction...........................................................................................................11.1IntroductionandBackGround.....................................................................................11.2Objective...........................................................................................................................11.3Limitations........................................................................................................................11.4Delimitations.....................................................................................................................2Chapter2......................................................................................................................32FundamentalConcepts..........................................................................................32.1AtmosphericFundamentals............................................................................................32.2Viscosity............................................................................................................................32.3RotorTheory....................................................................................................................32.4RotorGeometry...............................................................................................................42.5Aerodynamicforcesandmomentsonarotor.............................................................52.6Basicaerodynamicprinciplesandmodelling...............................................................62.6.1TheContinuityequation...................................................................................62.6.2TheincompressibleBernoulli’sequation........................................................62.6.3Theisentropicequationofstate.......................................................................72.6.4ThecompressibleBernoulli’sequation...........................................................72.6.5Incompressibleflowvs.compressibleflow....................................................8Chapter3......................................................................................................................93GambitModelling..................................................................................................93.12Ddesignofairfoil..........................................................................................................93.2BoundaryConditions.....................................................................................................113.33Ddesignofairfoil........................................................................................................123.4BoundaryConditionsfor3Ddomain.........................................................................19Chapter4....................................................................................................................204ModelingandBoundaryconditions....................................................................204.1ModellinginFluent.......................