RESEARCH ON THREE-DIMENSIONAL ENGINEERING FULL WAKE MODEL OF WIND TURBINE BASED ON MOMENTUM THEORY

Zhang Ping; Liu Hongwei; Wu Ningyu; Wei Yuchong; Li Jiagen; Shi Jianwei

doi:10.19912/j.0254-0096.tynxb.2023-1120

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (11) : 460-466. DOI: 10.19912/j.0254-0096.tynxb.2023-1120

RESEARCH ON THREE-DIMENSIONAL ENGINEERING FULL WAKE MODEL OF WIND TURBINE BASED ON MOMENTUM THEORY

Zhang Ping¹, Liu Hongwei², Wu Ningyu³, Wei Yuchong³, Li Jiagen³, Shi Jianwei³

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Abstract

In this article, a three-dimensional engineering full wake model （3DFM model） based on the momentum theory is proposed to study the wake characteristics of wind turbines. The 3DFM model not only divides the wake region into the near-wake region and the far-wake region; but also considering the influence of wind shear effect on wake velocity. The validity and accuracy of 3DFM model are verified by the measured data of wind farm. The prediction accuracy of 3DFM model is as high as 95.82% in the near-wake region and 95.00% in the far-wake region, which verifies the validity and accuracy of the model. The wake expansion coefficient and wind shear coefficient are modified according to the different atmospheric stable states of the inflow wind, and the influence of the atmospheric stable state on the wake velocity distribution and recovery is studied in detail. The results show that the more stable the atmosphere, the higher the wind shear coefficient, the larger the wake area at the same position downstream, and the slower the wake speed recovery.

Key words

wake effects / wind farm / wind turbines / full wake / wind share / atmospheric stability

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Zhang Ping, Liu Hongwei, Wu Ningyu, Wei Yuchong, Li Jiagen, Shi Jianwei. RESEARCH ON THREE-DIMENSIONAL ENGINEERING FULL WAKE MODEL OF WIND TURBINE BASED ON MOMENTUM THEORY[J]. Acta Energiae Solaris Sinica. 2024, 45(11): 460-466 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1120

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