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ISSN 0254-0096 CN 11-2082/K

太阳能学报 ›› 2022, Vol. 43 ›› Issue (10): 218-228.DOI: 10.19912/j.0254-0096.tynxb.2021-0342

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台风-浪-流耦合作用下海上风力机基础结构水动力特性分析

王硕1,2, 柯世堂1,2, 赵永发1, 员亦雯1, 张伟1, 杨杰1   

  1. 1. 南京航空航天大学土木与机场工程系,南京 210016;
    2. 南京航空航天大学江苏省风力机设计高技术研究重点实验室,南京 210016
  • 收稿日期:2021-04-01 出版日期:2022-10-28 发布日期:2023-04-28
  • 通讯作者: 柯世堂(1982——),男,博士、教授,主要从事结构工程与风能利用方面的研究。keshitang@163.com
  • 基金资助:
    国家重点研发计划(2017YFE0132000; 2019YFB1503701); 国家自然科学基金(52078251); 江苏省杰出青年基金(BK20211518); 中央高校基本科研业务费专项资金项目(NS2021050; NE2020007)

RESEARCH ON HYDRODYNAMICS OF FOUNDATION STRUCTURE OF OFFSHORE WIND TURBINE UNDER TYPHOON-WAVE-CURRENT COUPLING

Wang Shuo1,2, Ke Shitang1,2, Zhao Yongfa1, Yun Yiwen1, Zhang Wei1, Yang Jie1   

  1. 1. Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    2. Jiangsu Key Laboratory of Hi-Tech Research for Wind Turbine Design, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • Received:2021-04-01 Online:2022-10-28 Published:2023-04-28

摘要: 为揭示台风-浪-流耦合作用下风力机基础结构的水动力特性,以广东外罗10 MW级海上风力机为研究对象,基于模式耦合器(MCT)建立中尺度台风-浪-流(W-S-F)实时耦合模拟平台,分析超强台风“威马逊”过境全过程海上风电场台风-浪-流的时空演变特性;再结合中/小尺度嵌套方法分析风力机单桩基础水动力荷载分布特性;提出不同波浪相位下基础柱极值荷载模型。结果表明:建立的W-S-F平台对台风路径的模拟精度较单WRF模式提高42.51%;台风-浪-流耦合作用下基础柱水平波浪力正峰值增大约20%,负峰值减小约18%,并沿水深方向呈指数型变化规律,周向沿180°波向角呈对称分布;T4相位为风力机基础强度设计的最不利相位,基底剪力最大达7.68×106量级,基底弯矩最大达5.2×108量级。

关键词: 台风-浪-流耦合, 海上风力机, 中/小尺度, 水动力荷载特性

Abstract: To disclose hydrodynamic characteristics of the foundation structure of wind turbine under typhoon-wave-current coupling action, a 10 MW super-large offshore wind turbine in Wailuo Wind Farm, Guangdong was chosen as a research object and a real-time meso-scale WRF-SWAN-FVCOM (W-S-F) coupling simulation platform was constructed by using Model Coupling Toolkit (MCT). The spatial-temporal evolution of typhoon-wave-current in the offshore wind farm was simulated when a super typhoon “Ramason” passed through. Next,the hydrodynamic load distribution characteristics of the single pile foundation of wind turbine were analyzed by combining the meso-micro scale nested method. The extreme load model of the foundation piles under different wave phases was proposed. Results demonstrate that the constructed W-S-F platform increases the simulation precision of typhoon path by 42.51% than single WRF model. Under the coupling action of typhoon-wave-current, the positive peak value of the horizontal wave force of the foundation column increases by about 20%, and the negative peak value decreased by about 18%. The wave force changes exponentially along the direction of the water depth, and the circumferential wave force is symmetrical along the 180° wave angle. The T4 phase is the most adverse phase for the design of the wind turbine foundation strength, with the maximum base shear force of 7.68E6 magnitude and the maximum base bending moment of 5.2E8 magnitude.

Key words: typhoon-wave-current coupling, offshore wind turbines, meso-micro scale, hydrodynamic load characteristics

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