Open AccessValidation of a CFD model with a synchronized triple‐lidar system in the wind turbine induction zone
Author(s) -
Meyer Forsting A. R.,
Troldborg N.,
Murcia Leon J. P.,
Sathe A.,
Angelou N.,
Vignaroli A.
Publication year - 2017
Publication title -
wind energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.743
H-Index - 92
eISSN - 1099-1824
pISSN - 1095-4244
DOI - 10.1002/we.2103
Subject(s) - turbine , computational fluid dynamics , wind speed , mechanics , rotor (electric) , meteorology , wind power , radius , inflow , lidar , discretization , physics , environmental science , geology , mathematics , computer science , engineering , mathematical analysis , remote sensing , computer security , quantum mechanics , electrical engineering , thermodynamics
A novel validation methodology allows verifying a CFD model over the entire wind turbine induction zone using measurements from three synchronized lidars. The validation procedure relies on spatially discretizing the probability density function of the measured free‐stream wind speed. The resulting distributions are reproduced numerically by weighting steady‐state Reynolds averaged Navier‐Stokes simulations accordingly. The only input varying between these computations is the velocity at the inlet boundary. The rotor is modelled using an actuator disc. So as to compare lidar and simulations, the spatial and temporal uncertainty of the measurements is quantified and propagated through the data processing. For all velocity components the maximal difference between measurements and model are below 4.5% relative to the average wind speed for most of the validation space. This applies to both mean and standard deviation. One rotor radius upstream the difference reaches maximally 1.3% for the axial component. © 2017 The Authors. Wind Energy Published by John Wiley & Sons, Ltd.