Wind turbines in wind farms regularly operate in the wake of other wind turbines and experience lower wind speeds, higher turbulences and a reduced yield. To assess the wake effects models of different fidelity can be used. These models range from simple ones like Jensen to complex CFD models The new wake model WakeBlaster is a compromise between the requirements of accuracy and performance. It is implementing a solver for the 3D RANS (Reynolds-Averaged Navier Stokes) equations and is using an advanced actuator disk model as turbine representation. This poster compares the results of the Jensen model and WakeBlaster with the power generation for two onshore wind farms. Through this comparison the uncertainties of the models can be determined which leads to a better AEP prediction of future wind farms and an improved understanding of wake effects.
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