A comprehensive numerical model for aero-hydro-mooring analysis of a floating offshore wind turbine

IF 9 1区 工程技术 Q1 ENERGY & FUELS Renewable Energy Pub Date : 2024-11-02 DOI:10.1016/j.renene.2024.121793
Rizwan Haider , Wei Shi , Yefeng Cai , Zaibin Lin , Xin Li , Zhiqiang Hu
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Abstract

This paper presents a comprehensive study of a Floating Offshore Wind Turbine (FOWT), requiring multidisciplinary expertise in floating platform hydrodynamics, mooring system dynamics, and wind turbine aerodynamics. We introduce a fully coupled numerical model, focusing specifically on the NREL's (National Renewable Energy Laboratory's) 5 MW OC4 FOWT. The model is validated through both numerical simulations using the Computational Fluid Dynamics (CFD) based software OpenFOAM and experimental results. Key findings demonstrate the model's accuracy in forecasting the aerodynamic behaviors of the turbine, the platform's response to motions, and the behavior of the mooring system across diverse wind and sea state scenarios. Furthermore, the study enhances the understanding of FOWT's stability and efficiency by examining the influence of different Center of gravity (COG) heights. Results show that reduction in COG height has a minor effect on heave and surge motion but significantly decreases pitch motion and mooring line tension, thereby improving static stability and reducing the impact of wave loads on dynamic responses. Additionally, the results show that this reduction in COG height enhances the aerodynamic power output, suggesting that optimized FOWT designs could achieve improved energy capture efficiency. These insights optimize FOWT design and efficiency, enhancing renewable energy performance.
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用于浮式海上风力涡轮机气-水-系泊分析的综合数值模型
本文介绍了浮式海上风力涡轮机(FOWT)的综合研究,需要浮式平台流体力学、系泊系统动力学和风力涡轮机空气动力学等多学科专业知识。我们介绍了一个完全耦合的数值模型,特别侧重于 NREL(美国国家可再生能源实验室)的 5 兆瓦 OC4 FOWT。该模型通过使用基于计算流体力学(CFD)的软件 OpenFOAM 进行的数值模拟和实验结果进行了验证。主要研究结果表明,该模型能够准确预测涡轮机的空气动力学行为、平台对运动的响应以及系泊系统在不同风况和海况下的行为。此外,研究还通过考察不同重心高度(COG)的影响,加深了对风力涡轮机稳定性和效率的理解。结果表明,降低 COG 高度对波浪和浪涌运动的影响较小,但会显著降低俯仰运动和系泊线张力,从而提高静态稳定性,减少波浪载荷对动态响应的影响。此外,研究结果表明,降低 COG 高度可提高空气动力输出,这表明优化的 FOWT 设计可提高能量捕获效率。这些见解优化了 FOWT 的设计和效率,提高了可再生能源的性能。
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来源期刊
Renewable Energy
Renewable Energy 工程技术-能源与燃料
CiteScore
18.40
自引率
9.20%
发文量
1955
审稿时长
6.6 months
期刊介绍: Renewable Energy journal is dedicated to advancing knowledge and disseminating insights on various topics and technologies within renewable energy systems and components. Our mission is to support researchers, engineers, economists, manufacturers, NGOs, associations, and societies in staying updated on new developments in their respective fields and applying alternative energy solutions to current practices. As an international, multidisciplinary journal in renewable energy engineering and research, we strive to be a premier peer-reviewed platform and a trusted source of original research and reviews in the field of renewable energy. Join us in our endeavor to drive innovation and progress in sustainable energy solutions.
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