A Numerical Study of Atmospheric and Wake Turbulence Impacts on Wind Turbine Fatigue Loadings

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Large-eddy simulations of atmospheric boundary layers under various stability and surface roughness conditions are performed to investigate the turbulence impact on wind turbines. In particular, the aeroelastic responses of the turbines are studied to characterize the fatigue loading of the turbulence present in the boundary layer and in the wake of the turbines. Two utility-scale 5 MW turbines that are separated by seven rotor diameters are placed in a 3 km by 3 km by 1 km domain. They are subjected to atmospheric turbulent boundary layer flow and data are collected on the structural response of the turbine components. The surface roughness was found to increase the fatigue loads while the atmospheric instability had a small influence. Furthermore, the downstream turbines yielded higher fatigue loads indicating that the turbulent wakes generated from the upstream turbines have significant impact.
Publisher
ASME
Issue Date
2013-08
Language
English
Article Type
Article
Citation

JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME, v.135, no.3

ISSN
0199-6231
DOI
10.1115/1.4023319
URI
http://hdl.handle.net/10203/272859
Appears in Collection
AE-Journal Papers(저널논문)
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