Cross-flow turbines, also known as vertical-axis turbines, are attractive for power generation from wind and water currents. Some cross-flow turbine designs optimize unsteady fluid forces and maximize ...

Propeller wind turbines are the most common way of using one of the most abundant energy sources on Earth to generate electricity. The tall three-bladed fans are the ubiquitous symbol of wind energy, ...

Schools of fish have shown engineers how to squeeze much more power from wind farms. A new wind farm design mimics a school of fish to exploit wind turbulence, and could dramatically improve power ...