3D stall delay effect modeling and aerodynamic analysis of swept-blade wind turbine

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	3D stall delay effect modeling and aerodynamic analysis of swept-blade wind turbine
	Wang, Q.1,2; Xu, Y.1,3; Song, J. J.1,2; Li, C. F.1,2; Ren, P. F.1,2; Xu, J. Z.1,3
刊名	JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY
	2013-11-01
卷号	5 期号:6
英文摘要	For Horizontal Axis Wind Turbine (HAWT), the aerodynamic performance of the blade will become different when the geometry of the blade is bent backward in the rotor plane, which is usually called backward swept blade. In this paper the aerodynamic performance of backward swept-blade rotor will be analyzed by Free Wake Lifting Line Model and the corresponding wake vortexes are discussed. In order to make it possible to apply lifting line method, a proper 3D effect modification model is needed to be added in the computation. First, a new 3D stall delay model is established, named Inviscid Stall Delay Model (ISDM), which is derived from the simplified Navier-Stokes (N-S) equations. In the model, we treat the stall delay effects differently by the delay of the separation point on the airfoil, and aim to capture the further negative pressure reduction in the separation area. Second, a Free Wake Lifting Line Model is created and it is validated by the experimental results of the National Renewable Energy Laboratories (NREL) Phase VI and Model Experiments in the Controlled Condition (MEXICO) wind turbine blades. Third, based on the blade of the NREL Phase VI, a backward swept-blade is constructed, which has the same sweeping area as the straight blade. After that the aerodynamic performance of the swept-blade is explored by the lifting line code. The development of the wake vortexes and its influence on the swept-blade are analyzed. It can be concluded that the swept geometry leads to a periodic lag of the circumferential positions of the shedding vortexes, while its axial components are almost unchanged. The swept geometry is an important influence factor for the induced velocities distribution in the rotor plane. Besides, it should be noticed that the optimization of the swept-blade is important for its aerodynamic performance analysis which is needed to be discussed in the future. (C) 2013 AIP Publishing LLC.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Energy & Fuels
研究领域[WOS]	Energy & Fuels
关键词[WOS]	VORTICES
收录类别	SCI
语种	英语
WOS记录号	WOS:000329176100006
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/98795]
专题	工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位	1.Chinese Acad Sci, Inst Engn Thermophys, Beijing, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China 3.Chinese Acad Sci, Key Lab Wind Energy Utilizat, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Q.,Xu, Y.,Song, J. J.,et al. 3D stall delay effect modeling and aerodynamic analysis of swept-blade wind turbine[J]. JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY,2013,5(6).
APA	Wang, Q.,Xu, Y.,Song, J. J.,Li, C. F.,Ren, P. F.,&Xu, J. Z..(2013).3D stall delay effect modeling and aerodynamic analysis of swept-blade wind turbine.JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY,5(6).
MLA	Wang, Q.,et al."3D stall delay effect modeling and aerodynamic analysis of swept-blade wind turbine".JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY 5.6(2013).