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ECN publicatie: facebook
Titel:
FarmFlow validation against full scale wind farms
 
Auteur(s):
 
Gepubliceerd door: Publicatie datum:
ECN Windenergie 9-9-2015
 
ECN publicatienummer: Publicatie type:
ECN-E--15-045 ECN rapport
 
Aantal pagina's: Volledige tekst:
78 Download PDF  (2944kB)

Samenvatting:
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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