Upward Shift of Wind Turbine Wakes in Large Wind Farms

doi:10.3390/en16248051

IMECH-IR > 非线性力学国家重点实验室

	Upward Shift of Wind Turbine Wakes in Large Wind Farms
	Wang ZW(王泽伟)1,2 ; Yang XL(杨晓雷)1,2
通讯作者	Yang, Xiaolei([email protected])
发表期刊	ENERGIES
	2023-12-01
卷号	16 期号:24 页码:15
摘要	A detailed description of wake characteristics is essential for optimizing wind farm performance. Compared with the wake of a stand-alone wind turbine, less attention has been paid to wind turbine wakes in large wind farms. In this work, we investigate the vertical position of wakes for wind turbines in large wind farms with different streamwise turbine spacings and ground roughness lengths using large-eddy simulation with an actuator disk model. The simulation results reveal an upward shift of the wake center (defined as the position with the maximum velocity deficit) for the wind turbine deeply arrayed in the wind farm. Larger upward shifts of the wake center are observed for wind turbines in further downstream rows and wind turbines installed on the ground with higher roughness, for which the wake expands at a higher rate. It is conjectured that the upward shift of the wake center is caused by the upward shift of the turbulence-dominated momentum entrainment region and the constraint of ground on wake expansion. An analytical wake model incorporating the upward-shifting wake center was developed. In the proposed model, different expansion rates are employed for the lower and upper wake regions. The upward shift of the wake center is directly taken into account using the large-eddy simulation results. The comparison with the large-eddy simulation results demonstrates the importance of accounting for the upward shift of the wake center in analytical wake models.
关键词	wind turbine wake wind farm wake center analytical wake model
DOI	10.3390/en16248051
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001130846700001
关键词[WOS]	TURBULENT-FLOW ; MODEL ; SPEED
WOS研究方向	Energy & Fuels
WOS类目	Energy & Fuels
资助项目	NSFC Basic Science Center Program
项目资助者	NSFC Basic Science Center Program
论文分区	Q3
力学所作者排名	1
RpAuthor	Yang, Xiaolei
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/93774
专题	非线性力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang ZW,Yang XL. Upward Shift of Wind Turbine Wakes in Large Wind Farms[J]. ENERGIES,2023,16,24,:15.Rp_Au:Yang, Xiaolei
APA	王泽伟,&杨晓雷.(2023).Upward Shift of Wind Turbine Wakes in Large Wind Farms.ENERGIES,16(24),15.
MLA	王泽伟,et al."Upward Shift of Wind Turbine Wakes in Large Wind Farms".ENERGIES 16.24(2023):15.

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