§16§§This handbook provides both a comprehensive overview and deep insights on the state-of-the-art methods §04§Preface.- Part I: Aerodynamic Design.- Economical aspects of wind turbine aerodynamics and the design concepts.- §02§Bernhard Stoevesandt is heading the department Aerodynamics CFD and Stochastic Dynamics at the Fraunhofer Institute of Wind Energy and Energy System Technologies based in Oldenburg. He studied physics at the University of Bremen (Dipl. Phys., 2000). Afterwards he worked as a freelancer in the field of x-ray lenses. In 2002 he joined the University of Oldenburg in the field of wind energy power forecasting. In 2004 he started his PhD at the university on turbulence in wind energy aerodynamics finishing in 2010. In 2011 he joined Fraunhofer to soon become the Head of the department.§He has participated and continues to participate in the IEA Wind Task 29 and 31 projects focusing on wind fields and aerodynamics. A main interest of the work lies in the development of advanced techniques for aerodynamic and site simulations for wind turbines. The main developments have been in the field of numerical flow simulations for wind turbines.§ § Gera §02§rd Schepers graduated in 1986 at the faculty of Aerospace Engineering at TUDelft in the Netherlands. Since then he works at the Energy Research Center of the Netherlands ECN (now TNO Energy Transition) on the field of wind energy. His main expertise is aerodynamics (and related areas) on which he is active as researcher and coordinator of several large national and international projects. In 2012 he completed a PhD at TUDelft which was based on the experiences gained on the field of aerodynamic engineering methods since the start of his career. Since 2018 he also works as professor on Wind Energy at the University of Applied Sciences Hanze in Groningen, the Netherlands for 2 days/week. § Peter Fuglsang is Head of Blades R〓 National Lab as a researcher in the fields of wind turbine aer §02§odynamics, aeroelasticity, aeroacoustics, numerical optimization, cost modelling, wind tunnel testing and wind turbine blade design. He has been the project manager of National and European collaborative research projects and involved in Consultancy in wind turbine blade design and wind tunnel testing, supervision of PhD students and teaching at the Technical University of Denmark. In 2004 he joined LM Wind Power A/S as Manager of the Aerodynamics Team doing wind turbine blade design, airfoil design, passive 〓