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1、第31卷2010正第3期3月航空學(xué)報(bào)ACTAAERONAUTICAETASTRONAUTICASINICAV01．31NO．3Mar．2010文章編號(hào)：1000-6893(2010)03—0500—06細(xì)長(zhǎng)圓錐前體非對(duì)稱(chēng)渦流場(chǎng)的等離子體控制孟宣市1，郭志鑫1，羅時(shí)鈞2，劉鋒2(1．西北工業(yè)大學(xué)翼型葉柵空氣動(dòng)力學(xué)國(guó)學(xué)重點(diǎn)實(shí)驗(yàn)室，陜西西安710072)(2．美國(guó)加州大學(xué)爾灣分校機(jī)械與宇航工程系，CA92697—3975)ControlofAsymmetricVorticesoveraSlenderCo
2、nicalForebodyUsingPlasmaActuatorsMengXuanshil，GuoZhixinl，LuoShijun2，LiuFen92(1．NationalKeyLaboratoryofAerodynamicDesignandResearch，NorthwesternPolytechnicalUniversity，Xi’an710072，China)(2．TheDepartmentofMechanicalandAerospaceEngineering，UniversityofCa
3、lifornia，CA92697—3975．America)摘要：應(yīng)用一對(duì)單介質(zhì)阻擋放電(SDBD)等離子體激勵(lì)器對(duì)頂角為20。的圓錐一圓柱組合體圓錐段分離渦流場(chǎng)進(jìn)行了主動(dòng)控制試驗(yàn)研究。試驗(yàn)在3．0m×1．6m低速低湍流度風(fēng)洞中進(jìn)行，迎角為45。，基于圓錐段底面直徑的雷諾數(shù)為5×104。流動(dòng)控制分為等離子體激勵(lì)器關(guān)閉，左舷或右舷等離子體激勵(lì)器分別開(kāi)啟，左右舷等離子體激勵(lì)器占空循環(huán)3種模式。試驗(yàn)結(jié)果包括7個(gè)測(cè)量截面上的周向壓力分布以及積分得到的截面當(dāng)?shù)亓土匾约皥A錐段力和力矩。研究結(jié)果表明，在圓錐
4、頭部尖端處迎風(fēng)面兩側(cè)對(duì)稱(chēng)放置一對(duì)SDBD等離子體激勵(lì)器，采用合適的激勵(lì)器形式，并通過(guò)適當(dāng)?shù)碾妼W(xué)參數(shù)，可以實(shí)現(xiàn)對(duì)細(xì)長(zhǎng)旋成體側(cè)向力和力矩的比例控制。通過(guò)對(duì)模型及等離子體激勵(lì)器制作的改進(jìn)，相對(duì)于前人相應(yīng)的研究結(jié)果，本文中側(cè)向力和力矩隨占空比變化的線性度得到了改善。關(guān)鍵詞：細(xì)長(zhǎng)體；非對(duì)稱(chēng)分離渦；大迎角空氣動(dòng)力學(xué)；等離子體；主動(dòng)流動(dòng)控制中圖分類(lèi)號(hào)：V211．7文獻(xiàn)標(biāo)識(shí)碼：AAbstract：Anexperimentalstudyoftheactivecontrolofvorticesoverslenderf
5、orebodiesisperformedona20。circular-cone-cylindermodelusingapairofsingle-dielectricbarrierdischarge(SDBD)plasmaactuators．Thetestsarecarriedoutina3．0m×1．6mlow—turbulenceandlow—speedwindtunnelatanangleofattackof45。．TheReynoldsnumberbasedonthebasediameter
6、ofthecircularconeis5×104．Theresultsconsistofmeasu—rementsofcircumferentialpressuredistributionsoversevenstationsalongtheconeunderthreedifferentmodesofcontrols：bothplasma-off，plasma—onportorstarboard，andplasmaduty-cycleactuations．Thelocalcross—sectiona
7、landoverallsideforcesandmomentsovertheconearecalculatedfromthemeasuredpressures．TheresultsindicatethatitispossibletOachievelinearproportionalcontrolofthelateralforcesandmomentsoftheslenderbodybytheduty-cycleplasmaflowcontroltechniquewithappropriatelyd
8、esignedplasmaactuatorsandselectedelectricparameters．Thelinearityofthecontrolledlateralforcesandmomentswithrespecttothedutycycleisimprovedoverpreviousstudiesbecauseoftheimproveddesignoftheactuators．Keywords：slenderbody；asymmetricvortex；highangl
