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Sebastiano Stipa, UBC: Modelling Wind Farm Blockage and Interaction Between Sites
Today’s wind energy prediction procedures ignore the blockage effect caused by the wind farm on the front row turbines, resulting in a power overprediction bias that pervades the entire farm. This paper describes a recently started research project in which Large Eddy Simulations (LES) of wind farms immersed in Atmospheric Boundary Layers (ABL) will be used to study the phenomenon and derive an engineering blockage model capable of estimating blockage effects as a function of wind farm properties, ABL thermal stability, and complex terrain morphology. Moreover, wake recovery past wind farms will be studied to better forecast the effect of wake-wake interactions between neighboring wind farms. 

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