Insight into wind turbine stall and post-stall aerodynamics
Article first published online: 26 JUL 2004
Copyright © 2004 John Wiley & Sons, Ltd.
Volume 7, Issue 3, pages 247–260, July/September 2004
How to Cite
Tangler, J. L. (2004), Insight into wind turbine stall and post-stall aerodynamics. Wind Energ., 7: 247–260. doi: 10.1002/we.122
- Issue published online: 11 AUG 2004
- Article first published online: 26 JUL 2004
- Manuscript Accepted: 10 MAY 2004
- Manuscript Revised: 6 MAY 2004
- Manuscript Received: 3 NOV 2003
- US Department of Energy
- wind turbine;
- performance prediction;
- NASA Ames Phase VI
The objective of this study was to evaluate measured NASA Ames Unsteady Aerodynamic Experiment post-stall blade element data and to provide guidelines for developing an empirical approach that predicts post-stall aerofoil characteristics. Blade element data were analysed from the five radial stations of the baseline 5·03 m radius rotor. A lifting surface/prescribed wake performance prediction method was used to determine a reference angle of attack that corresponds to the measured blade element data. Using the measured normal and tangential force coefficients and estimated angle of attack, spanwise distributions of lift and drag performance characteristics were derived along with the circulation distributions. Guidelines for a new stall and post-stall model based on the measured trends in the aerofoil performance characteristics, along with flat plate theory, are proposed for predicting the peak and post-peak power. Copyright © 2004 John Wiley & Sons, Ltd.