Affiliation: | a ForWind Center for Wind Energy Research , Institute of Physics, Carl von Ossietzky University, Ammerländer Heerstr. 136, D-26129 Oldenburg, Germany b Department of Aeronautics, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK c Department of Mechanical Engineering, Poli - University of S ão Paulo, Av. Prof. Mello Morais, 2231 São Paulo, 05508-900 SP, Brazil |