Dynamic stall modelling of the S809 aerofoil and comparison with experiments
Article first published online: 26 JUN 2006
Copyright © 2006 John Wiley & Sons, Ltd.
Volume 9, Issue 6, pages 521–547, November/December 2006
How to Cite
Gupta, S. and Leishman, J. G. (2006), Dynamic stall modelling of the S809 aerofoil and comparison with experiments. Wind Energ., 9: 521–547. doi: 10.1002/we.200
- Issue published online: 26 OCT 2006
- Article first published online: 26 JUN 2006
- Manuscript Accepted: 30 MAR 2006
- Manuscript Revised: 6 MAR 2006
- Manuscript Received: 4 MAY 2005
- National Renewable Energy Laboratories (NREL), Golden, CO.
- dynamic stall;
- Leishman–Beddoes model;
- free vortex wake method;
- S809 aerofoil
An analysis of dynamic stall for the S809 aerofoil has been performed in conjunction with the Leishman–Beddoes dynamic stall model that was modified for wind turbine applications. Numerical predictions of the lift, drag and pitching moment coefficients were compared with measurements obtained for an oscillating S809 aerofoil at various reduced frequencies, mean angles of attack and angle of attack amplitudes. It was found that the results using the modified model were in good agreement with the experimental data. Hysteresis in the aerodynamic coefficients was captured well, although the drag coefficient was slightly underpredicted in the deep stall flow regime. Validation against the experimental data showed overall good agreement. The mathematical structure of the model is such that it can be readily incorporated into a comprehensive analysis code for a wind turbine. Copyright © 2006 John Wiley & Sons, Ltd.