ANALYSIS OF FLUID-STRUCTURE COUPLING CHARACTERISTICS OF COASTAL WIND TURBINE BLADEDS BASED ON MEASURED WIND FIELD

Pan Yueyue; Li Zhengnong; Zhang Yukun; Huang Bin

doi:10.19912/j.0254-0096.tynxb.2023-0154

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (12) : 330-340. DOI: 10.19912/j.0254-0096.tynxb.2023-0154

ANALYSIS OF FLUID-STRUCTURE COUPLING CHARACTERISTICS OF COASTAL WIND TURBINE BLADEDS BASED ON MEASURED WIND FIELD

Pan Yueyue^1,2, Li Zhengnong², Zhang Yukun³, Huang Bin⁴

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Abstract

In this paper, the wind field characteristics of a coastal wind farm are obtained by the UAVs （unmanned aerial vehicles） wind filed measurement method, and the measured wind field parameters are applied to the subsequent computational fluid dynamics simulation. Taking the full-scale model of a 2 MW wind turbine blade as the research object, a fluid-structure coupling system is established based on Workbench platform for calculation. The numerical simulation results of near-wake wind velocity distribution are compared with the measured results, and the rationality of the numerical calculation is verified. Then, the flapping deformation and equivalent stress responses of the rotating blades at rated wind velocity are calculated. Results show that the flapping deformation of wind turbine blade reaches its maximum value at the azimuth of 0°, and the maximum flapping deformation is 1916.4 mm, which is close to the results of the static loading test 2299 mm. The flapping deformation increases nonlinearly along the span-wise direction of the blade, and with a larger increasing slope at 0.60 times the radius of the wind wheel. The equivalent stress concentration area of the blade is located at the junction of the girder and the leading edge, and appears at azimuth of 60°, where the maximum value is 0.78 times of the radius of the wind wheel. Stress is asymmetrically distributed along the wind wheel height direction.

Key words

wind turbine blades / fluid-structure interaction / wind velocity distribution / flapping deformation / equivalent stress

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Pan Yueyue, Li Zhengnong, Zhang Yukun, Huang Bin. ANALYSIS OF FLUID-STRUCTURE COUPLING CHARACTERISTICS OF COASTAL WIND TURBINE BLADEDS BASED ON MEASURED WIND FIELD[J]. Acta Energiae Solaris Sinica. 2023, 44(12): 330-340 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0154

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