Hansen Martin O.L. Aerodynamics of Wind Turbines

2nd ed. — Earthscan, 2008. — 208 p. — ISBN-13 978-1-84407-438-9, ISBN-10 1-84407-438-2.This book has hopefully provided an insight into wind turbine aerodynamics and aeroelasticity. To model the steady performance of a given wind turbine in order to calculate the annual energy production for an actual site, the classical steady BEM method has been outlined. The loads on a real wind turbine construction are, however, very dynamic, mainly due to gravity and the varying inflow conditions from wind shear, tower shadow and, not least, atmospheric turbulence. All the theory and equations needed to write an unsteady BEM code are given in this book, including all necessary engineering models, such as dynamic inflow, dynamic stall and yaw/tilt models.