Self-similarity and Flow Field Characteristics of Horizontal Axis Wind Turbine Wakes

doi:10.13334/j.0258-8013.pcsee.171090

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	Self-similarity and Flow Field Characteristics of Horizontal Axis Wind Turbine Wakes
	Zhang, Xuyao; Yang, Congxin; Gao, Zhiteng; Luo, Song
刊名	Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering
	2018-08-05
卷号	38 期号:15 页码:4482-4489
关键词	Aerodynamics Flow control Flow fields Navier Stokes equations Shear stress Turbulence models Vorticity Wakes Wind tunnels Wind turbines Axial positions Flow field characteristics Horizontal axis wind turbines Self-similarities Shear-stress transport Vorticity strengths Wake expansions Wind turbine rotors
ISSN号	02588013
DOI	10.13334/j.0258-8013.pcsee.171090
英文摘要	In order to elucidate the wake characteristics of horizontal axis wind turbine operating in uniform inflow, by using the shear stress transport turbulence model, a rotor of 33kW two-blade horizontal axis wind turbine was simulated through solving the Reynolds time-averaged Navier-Stokes equations at different tip speed ratio. The results show that, in addition to the edge of the wake region, axial velocity deficit begin to remain the Gaussian self-similarity at a certain distance of downstream, and the greater the tip speed ratio is, the easier axial velocity deficit reach self-similarity state at downstream of wind turbine. Meanwhile, with the increase of the tip speed ratio, the wake expansion effect is more obvious and the tip vortices and root vortices break down early with the process of vortices propagate downstream. Within the range of two rotor diameters downstream of the turbine, the vorticity strength of tip vortices and root vortices decrease gradually with the increase of the distance from the wind turbine rotor, but the size of the vortex core is increasing. At the same axial position of wake region, the vorticity strength of tip vortex is always greater than that of the root vortex. © 2018 Chin. Soc. for Elec. Eng.
语种	中文
出版者	Chinese Society for Electrical Engineering
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113807]
专题	新能源学院能源与动力工程学院
作者单位	School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China
推荐引用方式 GB/T 7714	Zhang, Xuyao,Yang, Congxin,Gao, Zhiteng,et al. Self-similarity and Flow Field Characteristics of Horizontal Axis Wind Turbine Wakes[J]. Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering,2018,38(15):4482-4489.
APA	Zhang, Xuyao,Yang, Congxin,Gao, Zhiteng,&Luo, Song.(2018).Self-similarity and Flow Field Characteristics of Horizontal Axis Wind Turbine Wakes.Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering,38(15),4482-4489.
MLA	Zhang, Xuyao,et al."Self-similarity and Flow Field Characteristics of Horizontal Axis Wind Turbine Wakes".Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering 38.15(2018):4482-4489.