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低雷诺数下小型无人机翼型气动特性分析.docx

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低雷诺数下小型无人机翼型气动特性分析 Title:AerodynamicCharacteristicsAnalysisofSmallUnmannedAerialVehicleWingProfilesatLowReynoldsNumbers Abstract: Smallunmannedaerialvehicles(UAVs)havegainedsignificantattentionduetotheirversatileapplications.UnderstandingtheaerodynamiccharacteristicsofwingprofilesatlowReynoldsnumbersisvitalfordesigningefficientUAVs.ThispaperpresentsacomprehensiveanalysisoftheaerodynamicpropertiesofsmallUAVwingprofiles,focusingonlowReynoldsnumbers.Thestudyutilizescomputationalfluiddynamics(CFD)simulationstoinvestigatetheliftanddragforces,pressuredistribution,andflowpatternsoverdifferentwingprofiles.TheresultsprovidevaluableinsightsforoptimizingUAVwingdesignsandenhancingperformance. Introduction: SmallUAVshavebecomeapopularchoiceforvariousapplications,includingsurveillance,aerialphotography,anddisastermanagement.DesigningefficientandmaneuverableUAVsrequiresathoroughunderstandingoftheaerodynamiccharacteristicsoftheirwingprofiles.AtlowReynoldsnumbers,theeffectsofviscositydominatetheflowbehavior,creatingdistinctaerodynamicchallenges.ThisanalysisaimstofillthegapinexistingresearchbyexploringtheaerodynamicpropertiesofsmallUAVwingprofilesatlowReynoldsnumbers,sheddinglightonthedesignprocessforsuchvehicles. Methodology: ThestudyemploysCFDsimulationstoanalyzetheaerodynamicperformanceofdifferentwingprofiles.CFDmodelsareestablishedbasedonthewinggeometryandsimulationparameters,includingairflowvelocity,angleofattack,andReynoldsnumber.TheNavier-Stokesequationsaresolvednumerically,consideringsteady-stateconditions.Usingappropriateturbulencemodels,theCFDsimulationscalculateliftanddragforces,pressuredistribution,andflowpatternsoverthewingprofiles.Thesimulationsarevalidatedwithexperimentaldatafromwindtunnelteststoensureaccuracy. ResultsandDiscussion: Theaerodynamiccharacteristicsofvariouswingprofiles,suchasNACA0012,NACA4412,andClark-Y,areanalyzedandcomparedatlowReynoldsnumbers.Theliftanddragcoefficients,pressuredistribution,andflowpatternsareinvestigatedfordifferentanglesofattack.Theres