3D visualization of a wind turbine wake from coherent Doppler lidar data
I.N. Smalikho, V.A. Banakh, A.V. Falits, A.M. Sherstobitov, A.A. Sukharev, E.V. Gordeev
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
Keywords: coherent Doppler lidar, wind, turbulence, wind turbine, wind turbine wake visualization, wind speed deficit
Abstract
Studying wind turbine wakes is essential for optimizing wind turbine arrangement within wind farms. Pulsed coherent Doppler lidars (PCDLs) are the most effective tools for such studies. This paper suggests a new method for three-dimensional visualization of wind speed within a wake based on PCDL measurements. Numerical simulation shows that this method enables wind speed deficit estimates with a relative error of no more than 4%. An atmospheric experiment with the use of this three-dimensional visualization method reveals that the wake cross section exhibits a wind speed deficit structure close to an annular distribution, consistent with numerical simulation with the use of LES and RANS methods.
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