Study on flow field characteristics and aerodynamic loads of horizontal axis wind turbine in shear inflow

	Study on flow field characteristics and aerodynamic loads of horizontal axis wind turbine in shear inflow
	Zhang, Xuyao 1; Yang, Congxin 1,2; Li, Shoutu 1,2; Gao, Zhiteng 1; Luo, Song 1
刊名	Taiyangneng Xuebao/Acta Energiae Solaris Sinica
	2019-11-28
卷号	40 期号:11 页码:3281-3288
关键词	Aerodynamic loads Axial flow Computational fluid dynamics Flow fields Shear flow Turbomachine blades Vortex flow Wind turbines Blade passing frequency Flow field characteristics Fluctuation amplitudes Horizontal axis wind turbines Integral multiples Theoretical calculations Wind shears Wind turbine blades
ISSN号	02540096
英文摘要	A rotor of 33 kW two-blade horizontal axis wind turbine is simulated under the shear inflow conditions. The flow field characteristics and the aerodynamic loads of the horizontal axis wind turbine are studied by CFD method. The results show that the fluctuation curves of velocity with azimuth angle at the upstream of rotor deviate from the curves obtained from the theoretical calculation in shear inflow, and the axial velocity of wake region presenting asymmetry distribution. The moving speed of the tip vortex and root vortex above the hub is faster than that of below the hub. Meanwhile, the aerodynamic loads of wind turbine blade and rotor vary with azimuth angle in a sine or cosine way and the frequency corresponding to the peak of the power spectrum of the rotor load are related to the integral multiples of the blade passing frequency. When the wind shear exponent increases from 0.1 to 0.5, the average torque and axial force of rotor decrease 2.28% and 1.43% respectively, but the fluctuation amplitude increases gradually. Moreover, a phase shifting of the torque and axial force as functions of azimuth angle is found, and the larger the wind shear exponent, the more obvious of the phase shifting. The root mean square of yaw moment and tilt moment of rotor is increased by 4.07 times and 4.04 times respectively, and the fluctuation amplitude of rotor yaw moment and tilt moment increases gradually with the increase of wind shear exponent. © 2019, Editorial Board of Acta Energiae Solaris Sinica. All right reserved.
语种	中文
出版者	Science Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114300]
专题	能源与动力工程学院新能源学院
作者单位	1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Fluid Machinery and Systems, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Zhang, Xuyao,Yang, Congxin,Li, Shoutu,et al. Study on flow field characteristics and aerodynamic loads of horizontal axis wind turbine in shear inflow[J]. Taiyangneng Xuebao/Acta Energiae Solaris Sinica,2019,40(11):3281-3288.
APA	Zhang, Xuyao,Yang, Congxin,Li, Shoutu,Gao, Zhiteng,&Luo, Song.(2019).Study on flow field characteristics and aerodynamic loads of horizontal axis wind turbine in shear inflow.Taiyangneng Xuebao/Acta Energiae Solaris Sinica,40(11),3281-3288.
MLA	Zhang, Xuyao,et al."Study on flow field characteristics and aerodynamic loads of horizontal axis wind turbine in shear inflow".Taiyangneng Xuebao/Acta Energiae Solaris Sinica 40.11(2019):3281-3288.