Resolvent-based motion-to-wake modelling of wind turbine wakes under dynamic rotor motion

doi:10.1017/jfm.2023.1097

IMECH-IR > 非线性力学国家重点实验室

	Resolvent-based motion-to-wake modelling of wind turbine wakes under dynamic rotor motion
	Li, Zhaobin1,2 ; Yang, Xiaolei1,2
通讯作者	Yang, Xiaolei(xyang@imech.ac.cn)
发表期刊	JOURNAL OF FLUID MECHANICS
	2024-02-08
卷号	980 页码:47
ISSN	0022-1120
摘要	We propose a linearized deterministic model for predicting coherent structures in the wake of a floating offshore wind turbine subject to platform motions. The model's motion-to-wake predictive capability is achieved through two building blocks: a motion-to-forcing (M2F) part and a forcing-to-wake (F2W) part. The M2F model provides a unified framework to parameterize the effects of arbitrary floating wind turbine motions as unsteady loads of a fixed actuator disk, requiring only the radial distribution of the aerodynamics force coefficient on the blade as input. The F2W model is derived based on a bi-global resolvent model obtained from the linearized Navier-Stokes equations, using the time-averaged wake of a fixed wind turbine as input. In addition to its capability of predicting sensitive frequency ranges, the model excels linear stability analysis by providing spatial modes of the wake response in a motion-specific and phase-resolved manner. The model successfully predicts the wake pulsing mode induced by surge, as well as the similarity and difference of the wake meandering modes caused by sway and yaw. Large-eddy simulations under different inflow turbulence intensities (TIs) and length scales are further conducted to analyse the wake meandering triggered by the simultaneous excitation of free-stream turbulence and sway motion. The results show distinct frequency signatures for the wake dynamics induced by ambient turbulence and sway motion. The inflow TI is found to have a stabilizing effect on the wake, reducing the motion-induced wake responses. Such a stabilizing effect is captured satisfactorily with the proposed model, provided that the effective viscosity is calibrated properly using the data from the fixed turbine wake under the corresponding turbulent inflow.
关键词	wakes
DOI	10.1017/jfm.2023.1097
收录类别	SCI
语种	英语
WOS记录号	WOS:001157315600001
关键词[WOS]	EDDY VISCOSITY ; ENERGY AMPLIFICATION ; FLOW ; TUNNEL ; EVOLUTION ; SURGE ; AERODYNAMICS ; TURBULENCE ; STABILITY
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
资助项目	Basic Science Center Program for 'Multiscale Problems in Nonlinear Mechanics' of the National Natural Science Foundation of China[11988102] ; NSFC[12172360] ; NSFC[12202453]
项目资助者	Basic Science Center Program for 'Multiscale Problems in Nonlinear Mechanics' of the National Natural Science Foundation of China ; NSFC
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/94446
专题	非线性力学国家重点实验室
通讯作者	Yang, Xiaolei
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	Li, Zhaobin,Yang, Xiaolei. Resolvent-based motion-to-wake modelling of wind turbine wakes under dynamic rotor motion[J]. JOURNAL OF FLUID MECHANICS,2024,980:47.
APA	Li, Zhaobin,&Yang, Xiaolei.(2024).Resolvent-based motion-to-wake modelling of wind turbine wakes under dynamic rotor motion.JOURNAL OF FLUID MECHANICS,980,47.
MLA	Li, Zhaobin,et al."Resolvent-based motion-to-wake modelling of wind turbine wakes under dynamic rotor motion".JOURNAL OF FLUID MECHANICS 980(2024):47.