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1、第46卷第5期航空計(jì)算技術(shù)Vol.46No.52016年9月AeronauticalComputingTechniqueSep.2016垂直軸風(fēng)力機(jī)翼型氣動(dòng)優(yōu)化設(shè)計(jì)111222梁昌平,席德科,張森,陳寶峰,王向前,郭青隴(1.西北工業(yè)大學(xué)航空學(xué)院,陜西西安710072;2.山西焦煤安瑞電氣風(fēng)機(jī)有限公司,山西運(yùn)城044402)摘要:對(duì)小型垂直軸風(fēng)力機(jī)常用的NACA0015翼型進(jìn)行優(yōu)化設(shè)計(jì),使其具有更優(yōu)的氣動(dòng)性能。在優(yōu)化過(guò)程中,利用CST參數(shù)化方法對(duì)翼型的幾何外形進(jìn)行擾動(dòng),選取翼型的厚度及彎度作為約束,翼型切向力系數(shù)作為目標(biāo)函數(shù),以基于非支配排序的遺傳
2、算法(NSGA-II)作為優(yōu)化方法,最后建立優(yōu)化流程,優(yōu)化過(guò)程中利用XFOIL程序結(jié)合Viterna-Corrigan失速后模型計(jì)算優(yōu)化前后翼型的氣動(dòng)性能。結(jié)果表明,與NACA0015翼型相比,優(yōu)化后的翼型氣動(dòng)性能有了較大提升,最大升力系數(shù)提高了6.63%,最大升阻比提高了27.5%,最大切向力系數(shù)提高了22.7%。關(guān)鍵詞:垂直軸風(fēng)力機(jī);CST參數(shù)化方法;NSGA-II算法;翼型;優(yōu)化中圖分類號(hào):V211文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1671-654X(2016)05-0017-04OptimizationDesignonAifroilofVertica
3、lAxisWindTurbine111222LIANGChang-ping,XIDe-ke,ZHANGSen,CHENBao-feng,WANGXiang-qian,GUOQing-long(1.AeronauticsSchol,NrothwesternPolytecnicalUniversity,Xi′an710072,China;2.ShanxiCokingCoalAnruiElectricFanLimitedCompany,Yuncheng044402,China)Abstract:OptimizingtheNACA0015airfoilwh
4、ichiswidelyappliedinsmall-scaleverticalaxiswindtur-binetomakeithaveabetteraerodynamicperformance.Intheoptimizationprocess,usingCSTparameter-izationtoperturbtheairfoilgeometry,thethicknessandcamberoftheairfoilareselectedasthecon-straint,andthevalueofthetangentialforcecoefficien
5、tischosenastheobjectivefunction,thegenetical-gorithmbasedonnon-dominatedsorting(NSGA-II)isselectedasanoptimizationmethod,andtheop-timizingprocessisestablishedlastly,calculatestheaerodynamicperformanceoftheairfoilbyapplyingtheapproachofcombiningXFOILprogramandViterna-Corriganpo
6、st-stallmode.Theresultillustratesthat,comparedwiththeNACA0015airfoil,theaerodynamicperformanceoftheoptimizedairfoilhasbeengreatlyimproved,themaximumliftcoefficient,themaximumlift-dragratioandthemaximumtangentialforcecoefficientareincreasedby6.63%,27.5%and22.7%,respectively.Key
7、words:verticalaxiswindturbine;CSTparameterization;NSGA-II;airfoil;optimazation引言CA0015以及NACA0018對(duì)稱翼型并不完全適合垂直軸風(fēng)力機(jī),必須對(duì)原始翼型進(jìn)行改進(jìn)。Claessens對(duì)由于垂直軸風(fēng)力機(jī)(VerticalAxisWindTurbine,NACA0018翼型進(jìn)行改進(jìn),增加2%的厚度以及0.8%VAWT),尤其是H-VAWT(StraightBladedVerticalAx-的中弧線彎度,得到DU06-W-200層流翼型。在負(fù)isWindTurbine)
8、具有風(fēng)輪轉(zhuǎn)動(dòng)與風(fēng)向無(wú)關(guān)、振動(dòng)小、攻角下,DU06-W-200和NACA0018氣動(dòng)性能相噪音低、環(huán)境友好、安全性高、結(jié)構(gòu)簡(jiǎn)