%0 Generic
%A van der Laan, Paul
%D 2019
%T EllipSys3D large eddy simulation data of single wind turbine wakes in neutral atmospheric conditions
%U https://data.dtu.dk/articles/dataset/EllipSys3D_large_eddy_simulation_data_of_single_wind_turbine_wakes_in_neutral_atmospheric_conditions/10259936
%R 10.11583/DTU.10259936.v1
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%K wind turbine wake
%K LES
%K CFD
%K Computational Fluid Dynamics
%X This data set represents transient velocity fields obtained by large eddy simulations (LES) of a wind turbine wake, for two different ambient turbulence intensities (4% and 12.8%). EllipSy3D [1-3], the in-house flow solver of DTU Wind Energy, is used to compute the LES data. The complete setup and post processed data are described in:
http://onlinelibrary.wiley.com/doi/10.1002/we.1736/pdf
http://iopscience.iop.org/article/10.1088/1742-6596/1037/7/072001/pdf
The average flow field is published as Cases 5 and 6 in the first article, corresponding to a low and high ambient turbulence intensity. Two additional LES data sets are added (*_NoAD_*.nc), where the wind turbine model is switched off so one can isolate the wake effect.
More specific info:
- The NREL-5MW rotor is modeled as an actuator disk with a fixed force distribution that does not change with time. The force distribution is based on a rotor resolved detached eddy simulation. The rotor diameter D is 126 m.
- The coordinate system is: x=streamwise, y=lateral and z=height.
- The LES data is extracted from a plane at hub height (z=90 m) with:
a) Spatial dimensions x=-1D,8.5D and y=-2D,2D (actuator disk is located at (x,y,z) = (0, 0, 90) m,
b) Spatial sample resolution is D/30 (4.2 m). The numerical grid is twice as fine (D/60).
c) Temporal sample resolution is 0.24 s.
d) Each plane has 286x121 = 34606 spatial points.
e) 15500 planes are stored per case.
- The averaged freestream hub height velocity is close to 8 m/s.