“…A geometric arrangement based on the configuration of shed vortices in the wake of schooling fish showed an increase in the performance of an array of 16 Â 16 wind turbines by one order of magnitude [6]. Numerical analysis on two-dimensional clusters of VAWTs showed that the performance of turbines operating completely in the wake of other turbines can be improved by choosing their position such that they see a higher flow velocity due to the presence of other turbines and associated stream-tube contraction [7].…”