Here, we investigate a SGA cooperative coevolutionary
approach (SCGA) to design wind farms, utilizing the aggregated
rotation speed of the array as fitness. Each VAWT
is treated separately by evolution and approximation techniques,
see heterogeneous designs could emerge. In addition,
a Boolean gene is added to designate the rotation of a turbine
in order to allow counter-rotating arrays to potentially
emerge. Two turbines are positioned 33 mm adjacently and 30
mm from the propeller fan. That is, there is a 3 mm spacing
between the blades at their closest point; see the experimental
setup for two closely positioned VAWT in Fig. 14.