Wind Turbine Performance in Very Large Wind Farms: Betz Analysis Revisited

  title={Wind Turbine Performance in Very Large Wind Farms: Betz Analysis Revisited},
  author={Jacob R. West and Sanjiva K. Lele},
The theoretical limit for wind turbine performance, the so-called Betz limit, arises from an inviscid, irrotational analysis of the streamtube around an actuator disk. In a wind farm in the atmospheric boundary layer, the physics are considerably more complex, encompassing shear, turbulent transport, and wakes from other turbines. In this study, the mean flow streamtube around a wind turbine in a wind farm is investigated with large eddy simulations of a periodic array of actuator disks in half… 

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