Fig. 2
From: Advanced blade profiles for improved efficiency in Savonius wind turbines: the aeroleaf case study

2D profiles of optimized Savonius blades: (a) Roy, (b) Scooplet, (c) Elliptical, and (d) S-shaped.
From: Advanced blade profiles for improved efficiency in Savonius wind turbines: the aeroleaf case study

2D profiles of optimized Savonius blades: (a) Roy, (b) Scooplet, (c) Elliptical, and (d) S-shaped.