Final report of IEA annex XVIII: Enhanced field rotor aerodynamics database

This report describes the work performed within the IEA Annex XIV 'Field Rotor Aerodynamics' and its successor IEA Annex XVIII 'Enhanced Field Rotor Aerodynamics Database'. In these Annexes 7 organisations from 6 different countries collaborated in performing aerodynamic experimental programs on full scale horizontal axis wind turbines at field conditions. In such experimental programs local aerodynamic quantities (forces, velocities) are measured at several locations along a rotor blade. As a result of the international collaboration within the IEA Annexes it has been possible to coordinate data processing and to crate and maintain a database of measured data from all participants in a common file format. The database is stored on CD-ROM or accessible through Internet. In principle the database is available for outside parties. The detailed aerodynamic measurements obtained on very different turbines, give a unique opportunity to better understand the aerodynamic behaviour of a wind turbine. This may result in the development and validation of more accurate aerodynamic models.