TY - JOUR
T1 - On the multi-scale turbulent structure interactions within wind farms
AU - Liu, Huiwen
AU - Zhao, Zhenzhou
AU - Chamorro, Leonardo P.
AU - Hayat, Imran
AU - Jin, Yaqing
AU - Zheng, Yuan
N1 - Funding Information:
This work was supported by the Fundamental Research Funds for the Central Universities (Grant No. 2019B03514), National Natural Science Foundation of China (Grant No. 51876054), National Science Foundation (Grant No. ECCS-041544081) and the first group of 2011 plan of China’s Jiangsu Province (Grant No. [2013] 56). The authors also express most grateful to Prof. Leonardo P. Chamorro and his group.
PY - 2020/9/22
Y1 - 2020/9/22
N2 - The quantification of the scale-by-scale interaction of multi-wakes and background flow is required to estimate turbines behaviour within wind farms. The paper provides insight on the evolution of multi-scale turbulence of a model wind farm operating in turbulent boundary layer. The wind farm configured with aligned turbines set at streamwise spacing between units of 5 diameters by spanwise spacing of 2.5 diameters, corresponding to an array of 8x3 turbines. Howtwire anemometry was used to acquire high-resolution measurements of streamwise velocity fluctuations at various locations. Experimental results suggest that the contribution of multi-scale turbulence structures to the kinetic energy of the wake is highly dependent on the location inside the wind farm, the evolution is significantly modulated by turbine rotation, wake interactions and outer flow, large scale motions mainly dominate outer and far wakes, while small scales are popular in inner and near wakes.
AB - The quantification of the scale-by-scale interaction of multi-wakes and background flow is required to estimate turbines behaviour within wind farms. The paper provides insight on the evolution of multi-scale turbulence of a model wind farm operating in turbulent boundary layer. The wind farm configured with aligned turbines set at streamwise spacing between units of 5 diameters by spanwise spacing of 2.5 diameters, corresponding to an array of 8x3 turbines. Howtwire anemometry was used to acquire high-resolution measurements of streamwise velocity fluctuations at various locations. Experimental results suggest that the contribution of multi-scale turbulence structures to the kinetic energy of the wake is highly dependent on the location inside the wind farm, the evolution is significantly modulated by turbine rotation, wake interactions and outer flow, large scale motions mainly dominate outer and far wakes, while small scales are popular in inner and near wakes.
KW - Wind farm
KW - large scale motions
KW - spectra
KW - turbulent boundary layer
KW - wakes
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U2 - 10.1088/1742-6596/1618/6/062052
DO - 10.1088/1742-6596/1618/6/062052
M3 - Conference article
AN - SCOPUS:85092532524
VL - 1618
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 6
M1 - 062052
T2 - Science of Making Torque from Wind 2020, TORQUE 2020
Y2 - 28 September 2020 through 2 October 2020
ER -