The flow in the induction and entrance regions of lab‐scale wind farms

With the increasing demand for wind energy, it is important to be able understand and predict available resources. To that end, present tunnel study addresses flow in induction entrance region of farms through particle image velocimetry, with focus on differences between actuator disks two-bladed rotating turbine models. Both staggered aligned farm layouts are examined three different incoming directions. For each layout, 69 or turbines used, field view ranges from 12 rotor diameters upstream 8 downstream first row. The results show induction, blockage effect, higher disks, even though thrust (or drag) coefficient same. In contrast, wake stronger turbines. orientation layout do not have a major impact results. Modal decomposition shows structure similarity disk improves second row generating objects, indicating substitution by more appropriate than investigation single wakes.