收稿日期:2021-05-21修回日期:2021-05-31第40卷第2期计算机仿真2023年2月文章编号:1006-9348(2023)02-0024-04缝道闭合门对多段翼型气动特性的影响研究孔凡*,蔡锦阳(上海飞机设计研究院,上海201210)摘要:增升装置是飞机的重要部件,多段翼型则是增升装置的设计基础。为了改善多段翼型固定翼后缘处襟翼舱的分离,提升多段翼型的升阻特性,在固定翼后缘下壁面增加缝道闭合门装置,并对缝道闭合门及其偏转角度、转轴位置对多段翼型气动特性的影响进行了数值模拟研究。计算结果表明,小迎角范围内,在固定翼后缘下壁面增加缝道闭合门后,能够减少固定翼后缘襟翼舱的气流分离,最多可为多段翼型的升阻比带来1.9%的提升。多段翼型升阻比随缝道闭合门偏转角度、缝道闭合门转轴至襟翼前缘距离的增加呈先上升后下降的趋势。与无缝道闭合门构型相比,偏转角度为15°时,最多可为多段翼型升阻比带来4.9%的提升;转轴距襟翼前缘距离占弦长6%时,最多可为多段翼型升阻比带来7.4%的提升。关键词:多段翼型;缝道闭合门;数值模拟;升阻比中图分类号:V271.4文献标识码:BInfluenceofSlotClosureDooronAerodynamicCharacteristicsofMulti-elementAirfoilKONGFan*,CAIJin-yang(ShanghaiAircraftDesignandResearchInstitute,Shanghai201210,China)ABSTRACT:Thehigh-liftdeviceisanimportantcomponentforairplanes,whilethemulti-elementairfoilisthede-signbasisofit.Toreducetheflowseparationontheflapcabinatthetrailingedgeofthefixed-wingandenhancethelift-dragcharacteristicsofthemulti-elementairfoil,aslotclosuredoorwasaddedonthelowersurfaceofthefixed-wing’strailingedge.Theinfluenceonaerodynamiccharacteristicsofthemulti-elementairfoilfromtheslotclosuredoor,deflectionangleandpositionoftherotatingshaftwasstudiedbynumericalsimulation.Theresultsshowthat,withintherangeofalowangleofattack,addingaslotclosuredoorcanreduceflowseparationontheflapcabinandincreasethelift-dragratioofthemulti-elementairfoilbyupto1.9%.Thelift-dragratioofthemulti-elementairfoilwillfirstriseandthenfallwiththeincreaseofthedeflectionangleoftheslotclosuredoorandthedistancefromtheshaftoftheslotclosuredoortotheleadingedgeoftheflap.Comparedwiththeslotlesscloseddoorconfiguration,thelift-dragratioof...