Atmospheric and Wake Turbulence Impacts on Wind Turbine Fatigue Loadings: Preprint

Research output: Contribution to conferencePaper


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 turbinesthat 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 is 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 yieldedhigher fatigue loads indicating that the turbulent wakes generated from the upstream turbines have significant impact.
Original languageAmerican English
Number of pages15
StatePublished - 2011
Event50th AIAA Aerospace Sciences Meeting - Nashville, Tennessee
Duration: 9 Jan 201212 Jan 2012


Conference50th AIAA Aerospace Sciences Meeting
CityNashville, Tennessee

NREL Publication Number

  • NREL/CP-5000-53567


  • aeroelastic response
  • atmospheric boundary layers
  • large-eddy simulations
  • turbulence
  • wind
  • wind energy
  • wind turbines


Dive into the research topics of 'Atmospheric and Wake Turbulence Impacts on Wind Turbine Fatigue Loadings: Preprint'. Together they form a unique fingerprint.

Cite this