Open AccessA panel method free‐wake code for aeroelastic rotor predictions
Author(s) -
Roura M.,
Cuerva A.,
SanzAndrés A.,
BarreroGil A.
Publication year - 2010
Publication title -
wind energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.743
H-Index - 92
eISSN - 1099-1824
pISSN - 1095-4244
DOI - 10.1002/we.358
Subject(s) - wake , aeroelasticity , aerodynamics , rotor (electric) , flapping , wind tunnel , turbine , engineering , structural engineering , trim , mechanics , aerospace engineering , physics , mechanical engineering , wing
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.