Research on the characteristics of wave load distribution of offshore wind turbine foundations under the combined action of wind, wave and current

被引：0

作者：

Wang S. ^{[1
,2
]}

Ke S.-T. ^{[1
,2
]}

Zhang W. ^{[1
]}

Li Y. ^{[3
]}

Wang T.-G. ^{[2
]}

机构：

[1] Department of Civil and Airport Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing

[2] Jiangsu Key Laboratory of Hi-Tech Research for Wind Turbine Design, Nanjing University of Aeronautics and Astronautics, Nanjing

[3] State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai

来源：

Chuan Bo Li Xue/Journal of Ship Mechanics | 2022年 / 26卷 / 05期

关键词：

Offshore wind turbines; Wave evolution law; Wave load distribution; Wind; wave and current combined action;

D O I：

10.3969/j.issn.1007-7294.2022.05.005

中图分类号：

学科分类号：

摘要：

Offshore wind turbines are the commanding heights of the future development in the wind power industry, and the accurate calculation of wave loads on the foundation of wind turbines in a complex marine environment is particularly important. In order to reveal the action mechanism of the combined wind, wave and current flow field on the wind turbine foundation structure, a 6 MW large offshore wind turbine foundation in the East China Sea Xinghua Bay was taken as the background, and the Fluent simulation platform was used to construct a numerical wave tank. Firstly, the consistency of the direction of wind and water mass velocity at the free liquid surface of the traditional wind-wave combined wave-making method was improved; Secondly, the law of the spatiotemporal evolution of waves in the combined field was described; On this basis, the combined characteristics of the overall wave load of the foundation column under various working conditions were further studied, and the combined coefficient of the extreme value load was introduced and determined. Finally, the distribution characteristics of the foundation wave load of the wind turbine along the water depth and the circumferential direction were analyzed. The results show that: (1) the improved boundary wind-wave combined wave-making method proposed in this paper has good stability and effectiveness; (2) the combined effect of wind, current and wave has an overall magnifying effect on wave loads, which reaches up to 135%; (3) the wave load of the foundation column decreases exponentially along the water depth, and the phenomenon of "acceleration convection" appears at the crest. © 2022, Editorial Board of Journal of Ship Mechanics. All right reserved.

引用

页码：653 / 666

页数：13

共 23 条

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