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时间:2019-11-26
《垂直轴风力机翼型气动优化设计》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第46卷第5期航空计算技术Vol.46No.52016年9月AeronauticalComputingTechniqueSep.2016垂直轴风力机翼型气动优化设计111222梁昌平,席德科,张森,陈宝峰,王向前,郭青陇(1.西北工业大学航空学院,陕西西安710072;2.山西焦煤安瑞电气风机有限公司,山西运城044402)摘要:对小型垂直轴风力机常用的NACA0015翼型进行优化设计,使其具有更优的气动性能。在优化过程中,利用CST参数化方法对翼型的几何外形进行扰动,选取翼型的厚度及弯度作为约束,翼型切向力系数作为目标函数,以基于非支配排序的遗传
2、算法(NSGA-II)作为优化方法,最后建立优化流程,优化过程中利用XFOIL程序结合Viterna-Corrigan失速后模型计算优化前后翼型的气动性能。结果表明,与NACA0015翼型相比,优化后的翼型气动性能有了较大提升,最大升力系数提高了6.63%,最大升阻比提高了27.5%,最大切向力系数提高了22.7%。关键词:垂直轴风力机;CST参数化方法;NSGA-II算法;翼型;优化中图分类号:V211文献标识码:A文章编号: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对称翼型并不完全适合垂直轴风力机,必须对原始翼型进行改进。Claessens对由于垂直轴风力机(VerticalAxisWindTurbine,NACA0018翼型进行改进,增加2%的厚度以及0.8%VAWT),尤其是H-VAWT(StraightBladedVerticalAx-的中弧线弯度,得到DU06-W-200层流翼型。在负isWindTurbine)
8、具有风轮转动与风向无关、振动小、攻角下,DU06-W-200和NACA0018气动性能相噪音低、环境友好、安全性高、结构简
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