Multiscale analysis of a very long wind turbine wake in an atmospheric boundary layer

doi:10.1103/PhysRevFluids.8.104605

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	Multiscale analysis of a very long wind turbine wake in an atmospheric boundary layer
	Zhang FS(张风顺); Yang XL(杨晓雷); He GW(何国威)
刊名	PHYSICAL REVIEW FLUIDS
	2023-10-27
卷号	8 期号:10 页码:27
ISSN号	2469-990X
DOI	10.1103/PhysRevFluids.8.104605
通讯作者	Yang, Xiaolei(xyang@imech.ac.cn)
英文摘要	In this paper, we investigate the dynamics of a wind turbine wake for three different ground surface roughness lengths, i.e., k(0) = 0.001, 0.01, 0.1 m. The computational domain is very long [until 215D (D is the rotor diameter) wind turbine downwind], with the attempt to include the entire recovery process of a wind turbine wake. The streamwise variations of velocity deficit and turbulence intensity are analyzed. The focus of this paper is how flow structures of different scales vary as they pass through a wind turbine and travel to further downwind locations. Three different trends depending on scales are observed: (1) energy is added to motions of small scales (<1D) immediately in wind turbine's downwind, (2) energy for motions of scales in the range of 1D to 3.2D is first extracted by the wind turbine and then increased by the wake to a level higher than the inflow, and (3) energy for motions of scales greater than 3.4D is first extracted by the wind turbine, and then monotonically increase to the inflow level without a maximum. Finally, the energy density in scale space and its evolution in the streamwise direction are examined, showing the range of scales affected by a wind turbine and its wake.
分类号	二类
资助项目	NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102] ; National Natural Science Foundation of China[12172360] ; Institute of Mechanics, and Chinese Academy of Sciences
WOS关键词	LARGE-EDDY SIMULATION ; FLOW ; TURBULENCE ; STABILITY ; SIMILARITY ; TUNNEL ; FARM ; INSTABILITY ; VORTICES ; SPACE
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:001098149100001
资助机构	NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics ; National Natural Science Foundation of China ; Institute of Mechanics, and Chinese Academy of Sciences
其他责任者	Yang, Xiaolei
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/93367]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Zhang FS,Yang XL,He GW. Multiscale analysis of a very long wind turbine wake in an atmospheric boundary layer[J]. PHYSICAL REVIEW FLUIDS,2023,8(10):27.
APA	张风顺,杨晓雷,&何国威.(2023).Multiscale analysis of a very long wind turbine wake in an atmospheric boundary layer.PHYSICAL REVIEW FLUIDS,8(10),27.
MLA	张风顺,et al."Multiscale analysis of a very long wind turbine wake in an atmospheric boundary layer".PHYSICAL REVIEW FLUIDS 8.10(2023):27.