Jens Nørkær Sørensen is a Professor at the Department of Wind and Energy Systems, Technical University of Denmark (DTU). He received his Ph.D. from the Technical University of Denmark in 1986. He completed a Postdoctoral Fellowship at ONERA, France, from 1986 to 1989 and then joined DTU. He served as a Visiting Professor at NJIT, Newark, USA, from 1997 to 1998 and as a Visiting Professor at Monash University, Australia, in 2006. He received Gorm-Petersen’s Memorial Grant Award in 1987, Alexander Foss’ Gold Medal Award in 1999, and the Statoil Prize in 2002. He was selected as a Member of the Danish Academy of Technical Sciences in 2005. His research mainly concerns the development of methods for the analysis of flows and flow machines. The most important application area is within the optimization and analysis of wind turbines, both about the aerodynamics of the blades and wind turbine placement. Other research areas concern hydrodynamic instability of rotating flows and the mixing of fluids in bio-reactors.