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1、基于粘性伴随方法的旋翼先进气动外形优化设计分析第六章，建立了一套适合于先进旋翼气动外形综合优化设计分析的粘性伴随方法和代理模型方法相结合的混合设计方法。针对样例旋翼，首先分析各桨叶外形设计参数（翼型、扭转、桨尖形状）对悬停旋翼性能的影响，并基于混合方法开展了悬停旋翼气动外形综合优化设计，成功获得了旋翼先进气动外形设计的一些结果和经验。关键词：旋翼；气动特性；粘性伴随方法；代理模型方法；运动嵌套网格；非定常RANS方程ii万方数据南京航空航天大学硕士学位论文ABSTRACTRotoristhekeyae
2、rodynamiccomponentofthehelicopter,sinceitprovidesthelift,controlforceandpropulsionofthehelicopter,anditsaerodynamiccharacteristicshascloserelationshipwiththeaerodynamicshapeofrotorblade.Fortheadvancedhelicopter,execellentFigureofMeritandequivalentlift/d
3、ragratioofrotorforforwardflightareusuallyneeded.Thisisatypicalmulti-objectiveandmulti-constraintoptimizationproblem,andmanycontradictionsanddifficultiesstillexistduringthedesign,thusbringingabigchallengefortheaerodynamicshapedesignofadvancedrotor.Toover
4、comethischallenge,ahighly-accurateandhighly-efficientnumericalmethodisestablishedtopredicttheunsteadyflowfieldofrotor.Onthesebases,theviscousadjoint-baseddesignmethodisadoptedforoptimaldesignofadvancedrotorairfoilundermulti-objectiveandmulti-constraintc
5、onditions,andthesurrogatemodelmethodisthenemployedtodesigntheaerodynamicshapeoftherotorwithhigherFigureofMerit,thusitprovidesthemethodologyandthetechnicalbasisfortheaerodynamicshapedesignofadvancedrotor.Themajorcontentsareasfollows:InChapterone,theresea
6、rchbackgroundandsignificanceoftheresearchofadvancedrotoraerodynamicshapeoptimaldesignisbrieflyintroduced.Bothdomesticandabroadresearchstatusandtechnicalissuesofnumericalsimulationofrotorflowfield,advancedrotorbladeaerodynamicshapeandtheadjoint-basedaero
7、dynamicoptimaldesignarerespectivelyanalyzed,andthemainresearchcontentofthisarticleisalsogiven.InChaptertwo,asetofrotormoving-embeddedgridstrategyhasbeenestablished,whichissuitablefortheoptimaldesignofrotorblade.Theshapeofrotorbladeisfirstlyparameterized
8、bytheairfoildistribution,chorddistribution,aerodynamiclinedistributionandtwistdistribution.ThentheO-C-Otypeorthogonalandbody-fittedgridaroundrotorbladeisgeneratedbyusingPoissonequations,gridinterpolationandfoldingapproach.Onthese
