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ECN publication
FarmFlow validation against full scale wind farms
Published by: Publication date:
ECN Wind Energy 9-9-2015
ECN report number: Document type:
ECN-E--15-045 ECN publication
Number of pages: Full text:
78 Download PDF  

For the accurate calculation of wind turbine wake effects in (large) offshore wind farms, ECN has developed the software tool FarmFlow. FarmFlow calculates the average velocities and turbulence intensities inside a wind farm. The wake model in FarmFlow is a 3D parabolised Navier-Stokes code, using a k-? turbulence model to account for turbulent processes in the wake. A boundary layer model is used for the calculation of the free stream wind speed. For the deceleration and expansion of the near wake, FarmFlow uses an axisymmetric vortex wake model to calculate the stream wise pressure gradients, which are prescribed as a source term in the flow equations.

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