Research on Double-Gaussian Distribution Actuator Disk Model of Wind Turbine
Accurate and efficient wake simulation of wind turbine is crucial to the design and optimal operation of wind farms.CFD combined with actuator disc model which simplify the wind turbine impeller is the most commonly used wake numerical simulation method in engineering.In response to the problem of insufficient simulation accuracy of traditional non-uniform distribution actuator disk models in the near wake region,a double-Gaussian distribution actuator disk model is proposed.This model considers the force characteristics of the blades and the distribution characteristics of the wake,and the volume force is distributed radially in a double-Gaussian curve on the actuator disk surface.Taking wind tunnel and wind farm measured data as cases for analysis,the results show that the double Gaussian distribution actuator disk model is suitable for large wind turbines with high thrust coefficients,and the overall wake velocity simulation accuracy is high.It can accurately simulate the changes in wake radius along the flow direction,significantly improving the problem of underestimating velocity loss in traditional non-uniform actuation disk models in the near wake region.
Wake EffectsActuator Disc ModelDouble-Gaussian Distribution
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