Turbulence in waked wind turbine wakes: Similarity and empirical formulae

doi:10.1016/j.renene.2023.03.068

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	Turbulence in waked wind turbine wakes: Similarity and empirical formulae
	Zhang Y(张奕); Li ZB(李曌斌); Liu XH(刘晓豪); Sotiropoulos, Fotis ; Yang XL(杨晓雷)
刊名	RENEWABLE ENERGY
	2023-07
卷号	209 页码:27-41
关键词	Wind turbine wake Similarity Empirical formulae Reynolds normal stress
ISSN号	0960-1481
DOI	10.1016/j.renene.2023.03.068
英文摘要	Turbulence of wind turbine wakes increases the power fluctuations and dynamic loads of downwind turbines. In this work, we analyze the large-eddy simulation (LES) data of the Horns Rev wind farm, and find that the streamwise variations of the Reynolds normal stresses in the wakes of the waked wind turbines located in different rows collapse well with each other for both rise and decay portions when they are normalized using the maxima. Empirical formulae in the form of a power function are then proposed to describe the streamwise variations of the Reynolds normal stresses for different blade spanwise positions. Notably, linear relations are observed between the exponent and the coefficient. The LES data of the two tandem wind turbine cases with different inflows and turbine spacings are then employed to test the proposed empirical formulae. The tests show that the empirical formulae can capture the downstream variations of the Reynolds normal stresses especially for the streamwise component.
分类号	二类/Q1
WOS研究方向	WOS:000973652600001
语种	英语
资助机构	NSFC Basic Science Center Program [11988102] ; National Natural Science Foundation of China [12172360] ; Chinese Academy of Sciences, China ; Institute of Mechanics CAS
其他责任者	Yang, XL
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92249]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.(Zhang Yi) Lanzhou Univ Coll Civil Engn & Mech Lanzhou 730000 Peoples R China 2.(Sotiropoulos Fotis) Virginia Commonwealth Univ Dept Mech & Nucl Engn Richmond VA 23284 USA 3.(Zhang Yi, Li Zhaobin, Liu Xiaohao, Yang Xiaolei) Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China 4.(Zhang Yi, Li Zhaobin, Liu Xiaohao, Yang Xiaolei) Chinese Acad Sci Inst Mech State Key Lab Nonlinear Mech Beijing 100190 Peoples R China
推荐引用方式 GB/T 7714	Zhang Y,Li ZB,Liu XH,et al. Turbulence in waked wind turbine wakes: Similarity and empirical formulae[J]. RENEWABLE ENERGY,2023,209:27-41.
APA	张奕,李曌斌,刘晓豪,Sotiropoulos, Fotis,&杨晓雷.(2023).Turbulence in waked wind turbine wakes: Similarity and empirical formulae.RENEWABLE ENERGY,209,27-41.
MLA	张奕,et al."Turbulence in waked wind turbine wakes: Similarity and empirical formulae".RENEWABLE ENERGY 209(2023):27-41.