Research on the ice-resistance performance of conical wind turbine foundation in brash ice fields

被引:2
作者
Zhou, Chenyan [1 ,2 ]
Chen, Ling [1 ]
Ma, Lijun [2 ]
Yang, Jie [1 ]
Zhang, Jianing [2 ]
机构
[1] Nantong Inst Technol, Sch Naval Architecture & Ocean Engn, Nantong 226000, Peoples R China
[2] Dalian Maritime Univ, Sch Naval Architecture & Ocean Engn, Dalian 116026, Peoples R China
关键词
Wind turbine; CFD-DEM; Ice-breaking cone; Ice resistance performance; Brash ice;
D O I
10.1016/j.rineng.2024.102735
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Due to the significantly higher wind energy density in high-latitude sea areas compared to other regions, the construction of offshore wind farms is shifting towards these areas. However, in high-latitude sea areas, large amounts of sea ice float on the surface during winter, making ice loads a critical factor affecting the structural safety of wind turbines. For monopile flexible wind turbines, installing an ice-breaking cone near the waterline is an effective measure to withstand the threat of sea ice. To clarify the ice resistance performance of conical wind turbine foundations in brash ice zones, this study proposes a coupled Computational Fluid Dynamics-Discrete Element Method (CFD-DEM). This method is used to calculate the ice load results for a cylindrical riser, and the results were found to be in good agreement with the ice load experiment results from China University of Petroleum's wave flume (CUPWF). This validation confirms the rationality of the method. Taking a 5 MW monopile wind turbine installed with an ice-breaking cone as the research object, the time history of dynamic ice loads and the displacement response of ice-induced vibration during the interaction between the wind turbine and brash ice are simulated. Considering the water level variations caused by tides, the differences in ice resistance performance between the upright cone and the inverted cone of the ice-breaking cone are analyzed. Finally, the impact of changes in cone angle on the ice resistance performance of the wind turbine foundation is determined. The results indicate that under the impact of brash ice, the upright cone of the ice-breaking cone has a higher ice resistance capacity compared to the inverted cone. With changes in cone angle, the trends of ice loads in the horizontal and vertical directions vary oppositely. However, the overall ice resistance capacity of the wind turbine foundation decreases as the cone angle increases. This study can provide a reference for the rational design of conical wind turbines in cold regions.
引用
收藏
页数:12
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