Abstract
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 language | American English |
|---|---|
| Number of pages | 15 |
| State | Published - 2011 |
| Event | 50th AIAA Aerospace Sciences Meeting - Nashville, Tennessee Duration: 9 Jan 2012 → 12 Jan 2012 |
Conference
| Conference | 50th AIAA Aerospace Sciences Meeting |
|---|---|
| City | Nashville, Tennessee |
| Period | 9/01/12 → 12/01/12 |
NREL Publication Number
- NREL/CP-5000-53567
Keywords
- aeroelastic response
- atmospheric boundary layers
- large-eddy simulations
- turbulence
- wind
- wind energy
- wind turbines