Abstract
The airfoil-wake aerodynamic interaction of wind turbines was experimentally investigated using PIV(particle image velocimetry) technology. It analyzed the flow structure of downstream airfoil when the wake excited the leading edge, suction side and pressure side of airfoil, respectively. The results indicate that the helpful wake excitation is unsteady excitation which doesn't change main flow of downstream airfoil distinctly. The separation area at the suction side is restrained under the wake excitation at leading edge of airfoil when the upstream and downstream airfoils have the same incidence angle and appropriate axial-spacing.
| Original language | English |
|---|---|
| Pages (from-to) | 281-288 |
| Number of pages | 8 |
| Journal | Hangkong Dongli Xuebao/Journal of Aerospace Power |
| Volume | 26 |
| Issue number | 2 |
| State | Published - Feb 2011 |
Keywords
- Aerodynamic interaction
- Airfoil of wind turbine
- Flow field structure
- PIV(particle image velocimetry) technology
- Unsteady excitation
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