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Evaluation of Actuator Disk Model Relative to Actuator Surface Model for Predicting Utility-Scale Wind Turbine Wakes
Li ZB(李曌斌)1; Yang XL(杨晓雷)1,2
Source PublicationENERGIES
2020-07-01
Volume13Issue:14Pages:18
ISSN1996-1073
Abstract

The Actuator Disk (AD) model is widely used in Large-Eddy Simulations (LES) to simulate wind turbine wakes because of its computing efficiency. The capability of the AD model in predicting time-average quantities of wind tunnel-scale turbines has been assessed extensively in the literature. However, its capability in predicting wakes of utility-scale wind turbines especially for the coherent flow structures is not clear yet. In this work, we take the time-averaged statistics and Dynamic Mode Decomposition (DMD) modes computed from a well-validated Actuator Surface (AS) model as references to evaluate the capability of the AD model in predicting the wake of a 2.5 MW utility-scale wind turbine for uniform inflow and fully developed turbulent inflow conditions. For the uniform inflow cases, the predictions from the AD model are significantly different from those from the AS model for the time-averaged velocity, and the turbulence kinetic energy until nine rotor diameters (D) downstream of the turbine. For the turbulent inflow cases, on the other hand, the differences in the time-averaged quantities predicted by the AS and AD models are not significant especially at far wake locations. As for DMD modes, significant differences are observed in terms of dominant frequencies and DMD patterns for both inflows. Moreover, the effects of incoming large eddies, bluff body shear layer instability, and hub vortexes on the coherent flow structures are discussed in this paper.

Keywordwind turbine wake actuator disk model actuator surface model dynamic mode decomposition coherent structures wake meandering
DOI10.3390/en13143574
Indexed BySCI ; EI
Language英语
WOS IDWOS:000557073400001
WOS KeywordTUNNEL ; FLOW ; TURBULENCE ; DYNAMICS
WOS Research AreaEnergy & Fuels
WOS SubjectEnergy & Fuels
Funding ProjectNSFC Basic Science Center Program[11988102]
Funding OrganizationNSFC Basic Science Center Program
ClassificationQ3
Ranking1
ContributorYang, Xiaolei
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/84875
Collection非线性力学国家重点实验室
Affiliation1.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
Recommended Citation
GB/T 7714
Li ZB,Yang XL. Evaluation of Actuator Disk Model Relative to Actuator Surface Model for Predicting Utility-Scale Wind Turbine Wakes[J]. ENERGIES,2020,13,14,:18.Rp_Au:Yang, Xiaolei
APA Li ZB,&Yang XL.(2020).Evaluation of Actuator Disk Model Relative to Actuator Surface Model for Predicting Utility-Scale Wind Turbine Wakes.ENERGIES,13(14),18.
MLA Li ZB,et al."Evaluation of Actuator Disk Model Relative to Actuator Surface Model for Predicting Utility-Scale Wind Turbine Wakes".ENERGIES 13.14(2020):18.
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