Characterizing Turbine Inflow during a Stability Transition using Dual-Doppler Radar Measurements

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Abstract

Proper characterization of turbine inflow is vital for understanding and improving turbine and wind plant performance. It is well recognized that the stability of the lower atmosphere has a direct impact on the turbulence scales a wind turbine must respond to<sup>1,2</sup>. As turbine rotors grow in size, so too can the horizontal and vertical variability in both the mean and turbulent components of the wind impacting the full rotor sweep. In this study, three hypothetical rotor concepts (e.g. different hub heights and rotor diameters) are placed into a boundary layer characterized by a pronounced unstable-to-stable stability transition to examine the inflow evolution and variability that exists across the rotor sweep.<br> <br>This study makes use of the measurements obtained by two mobile Doppler radar systems in the United States Midwest to construct high spatial and temporal resolution dual-Doppler time histories of the evolving inflow into the three rotors examined. The radars
Original languageEnglish
JournalJournal of Physics: Conference Series
DOIs
StatePublished - Sep 2020

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