Application of the Townsend–George theory for free shear flows to single and double wind turbine wakes – a wind tunnel study

Abstract. The evolution of the mean velocity and turbulence downstream wind turbine wakes within atmospheric boundary layer has been studied over past decades, but an analytical description is still missing. One possibility to improve comprehension this look into modeling turbulent bluff body wakes. There, by means streamwise scaling centerline deficit, nature inside a wake can be classified. In paper, we introduce model classical theory as introduced Albert Alan Townsend William Kenneth George. To test theories, data were obtained from tunnel experiments using hot-wire anemometry in single operating upstream turbine. First, whether requirements under which Townsend–George valid are fulfilled Based on verification apply theory. Further, framework allows for distinguishing between two types turbulence, namely equilibrium non-equilibrium turbulence. We find that at may present outer parts wake. Finally, characterize wake, compare results Jensen Bastankhah–Porté-Agel models. recent developments formalism used further Particularly, models perform better than due presence virtual origin scalings, demonstrate improving implementing parameter. also see how dissipation changes across important farms correctly.