A panel method free-wake code for aeroelastic rotor predictions
Article first published online: 22 JUL 2009
Copyright © 2009 John Wiley & Sons, Ltd.
Volume 13, Issue 4, pages 357–371, May 2010
How to Cite
Roura, M., Cuerva, A., Sanz-Andrés, A. and Barrero-Gil, A. (2010), A panel method free-wake code for aeroelastic rotor predictions. Wind Energ., 13: 357–371. doi: 10.1002/we.358
- Issue published online: 20 APR 2010
- Article first published online: 22 JUL 2009
- Manuscript Accepted: 16 JUN 2009
- Manuscript Revised: 27 MAR 2009
- Manuscript Received: 24 NOV 2008
- vortex model;
- panel method;
- NREL experiments;
A panel method free-wake model to analyse the rotor flapping is presented. The aerodynamic model consists of a panel method, which takes into account the three-dimensional rotor geometry, and a free-wake model, to determine the wake shape. The main features of the model are the wake division into a near-wake sheet and a far wake represented by a single tip vortex, and the modification of the panel method formulation to take into account this particular wake description. The blades are considered rigid with a flap degree of freedom. The problem solution is approached using a relaxation method, which enforces periodic boundary conditions. Finally, several code validations against helicopter and wind turbine experimental data are performed, showing good agreement. Copyright © 2009 John Wiley & Sons, Ltd.