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ID:52209314
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页数:7页
时间:2020-03-25
《基于扰流技术的直叶片升力型垂直轴风轮的性能改善.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第52卷第22期2016年11月机械工程学报JOURNAL0FMECHANICALENGINEERINGVbl.52NOV.No.2220l6DoI:10.3901/JME.2016.22.146基于扰流技术的直叶片升力型垂直轴风轮的性能改盖冰Fj赵振宙1,2陈潘浩1王同光2田晨1刘玄1郑源1(1.河海大学能源与电气学院南京211100;2.南京航空航天大学江苏省风力机设计高技术研究重点实验室南京210016)摘要:提出采用扰流方法,来解决因局部方位角的叶片攻角极小而导致整体H型风轮性能较低的问题。基于双盘面多流管模型,分析了尖速比分别为5和6时,扰流对叶片攻角、切
2、向力系数和转矩的影响规律。计算表明:扰流作用下,在00<0<15。和3450<0<3600引流范围内,攻角增幅随着方位角的增加而增加;在175。<0<185。范围内,随方位角的增加而减小;相同引流域内,随着尖速比的增大而减小。扰流对00方位角性能改善效果比1800方位角明显,切向力系数和转矩的增幅在00<0<150扰流范围内较大,345。<0<3600次之,1750,<0<185。范围内增幅最小。研究了扰流角对风轮性能的影响规律,研究表明适当增大00和1800处的扰流角可以提高风轮性能,扰流角增加相同幅度,上盘面的转矩的提高幅度更大。关键词:Darrieus.H型风
3、轮;扰流;双盘面多流管模型:性能改善中图分类号:T85PerformanceImprovementofLiftTypeWindTurbinewithStraightBladesBasedonInterferenceAirflowTechnologyZHAOZhenzhoul‘2CHENPanha01WANGTongguan92TIANChenlLIUXuanlZHENGYuanl(1.CollegeofEnergyandElectricalEngineering,HohaiUniversity,Nanjiing211100;2.JiangsuKeyLaborator
4、yofHi—TechResearchforWindTurbineDesign,NanjingUniversityofAeronautics&Astronautics,Nanjing210016)Abstract:ThemethodofinterferenceairflOWiSputforwardtosolvetheproblemofH.typewindturbine,lowerperformance,causedbythesmallangleofattack.Thedouble.multiplestream.tubemodeliSusedforanalyzingth
5、einfluenceoftheinterferenceairflOWtotheangleofattackinthespeedradiosof5and6respectively.Calculationshowsthat:Disturbanceairflowincreasesthebladeangleofattack.andthegrowthincreaseswiththeincreaseoftheazimuthanglewithinthetwoscopesoftheinterferencethatiSO090<150and3450<0<3600.butthegrowt
6、hdecreasesinthescopeofazimuthanglebetween1750and1850.Inthesamescopeofinterference.astipspeedratiohigher,thegrowthofbladeelementangleofattacklowerinstead;Therangeofinterferencetotheimprovedperformanceinooazimuthangleishigherthanthatisin1800azimuthangle,inazimuthanglebetween00and150。theg
7、rowthofthebladeelementtorqueiShigherthanthatinscopesof3450<0<360。,andthatiSthelowestintheazimuthanglescope175。≤酿≤1850.Atthesametime,theeffectrulesofinterferenceangleimpactonwindturbineperformanceiSanalyzed,studieshaveshownthat。increasingtheinterferenceanglein00and1800appropriatelyCan
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