随着海上风力机尺寸的不断扩大，叶片的铸造长度和重量随之增加。然而，在叶片总质量中占比极大的叶根部分实际发电能力却较差。因此，为提高海上风力机的功率系数并降低叶片铸造长度和重量，提出混合结构海上双叶轮风力机。该风力机叶轮构型由带有桁架或其他高效叶根结构的主叶轮和帮助捕获叶轮中心风能的辅助叶轮组合而成。采用计算流体力学方法对混合结构海上双叶轮风力机的尾迹特性进行研究。结果表明，相比于单叶轮形式以及传统双叶轮形式，混合结构海上双叶轮风力机的近叶轮区域产生的叶尖、叶根涡系结构更加规则，尾迹整体上较为稳定有序。
As the size of offshore wind turbines grows, their cast length and weight increase. However, the actual power generation capacity of the blade root, which accounts for a great proportion of the total blade mass, is relatively poor. Therefore, a new concept of a hybrid-structured offshore dual-rotor wind turbine has been proposed to improve the power coefficient of offshore wind turbines and to reduce the length and weight of the blades. This model consists of a main rotor with a truss or other high-efficiency blade root structure and an auxiliary rotor that helps to capture the wind energy in the center portion. The wake characteristics of the hybrid-structured offshore dual-rotor wind turbine are investigated using computational fluid dynamics methods. Compared to the single-rotor form and conventional dual-rotor form, the hybrid offshore dual-rotor wind turbine contributes to a more regular vortex system structure in the near-rotor region while the wake generally seems more stable and orderly.
2025,47(17): 96-103 收稿日期：2024-11-11
DOI：10.3404/j.issn.1672-7649.2025.17.016
分类号：TK83
基金项目：国家自然科学基金资助项目（52471292，51809171）
作者简介：金彦晖(1999-),男,硕士研究生,研究方向为海上风力机
参考文献：
[1] HOLLANDS E, HE C, GAN L. A particle image velocimetry study of dual-rotor counter-rotating wind turbine near wake[J]. Journal of Visualization, 2020, 23(3): 425-435.
[2] BRAMANTYA M, HUDA L. An experimental study on the mechanics power of counter rotating wind turbines model related with axial distance between two rotors[C]//The 2016 6th International Annual Engineering Seminar (InAES), IEEE. Yogyakarta, Indonesia, 2016.
[3] WANG Z, TIAN W, OZBAY A, et al. An experimental study on the aeromechanics and wake characteristics of a novel twin-rotor wind turbine in a turbulent boundary layer flow[J]. Experiments in Fluids, 2016, 57(9): 150-166.
[4] WANG Z, OZBAY A, TIAN W, et al. An experimental study on the aerodynamic performances and wake characteristics of an innovative dual-rotor wind turbine[J]. Energy, 2018, 147: 94-109.
[5] WANG K, LIU T, WAN Y, et al. Numerical investigation on aerodynamic characteristics of dual-rotor wind turbines[J]. Journal of Marine Science and Engineering, 2022, 10: 1887.
[6] MOGHADASSIAN B, ROSENBERG A, SHARMA A. Numerical investigation of aerodynamic performance and loads of a novel dual rotor wind turbine[J]. Energies, 2016, 9: 571.
[7] ROSENBERG A, SHARMA A. A prescribed-wake vortex lattice method for preliminary design of co-axial, dual-rotor wind turbines[J]. Journal of Solar Energy Engineering, 2016, 138: 061002.
[8] THELEN A, LEIFSSON L, SHARMA A, et al. RANS-based design optimization of dual-rotor wind turbines[J]. Engineering Computations, 2018, 35: 35-52.
[9] YANG Y, LI H, YAO J, et al. Research on the characteristic parameters and rotor layout principle of dual-rotor horizontal axis wind turbine[J]. Energy, 2019, 189: 116270.
[10] SUNDARARAJU H, LO K, METCALFE R, et al. Aerodynamics and CFD analysis of equal size dual-rotor wind turbine[J]. Journal of Renewable and Sustainable Energy, 2017, 9: 043305.
[11] BAI H, WANG N, WAN D. Numerical study of aerodynamic performance of horizontal axis dual-rotor wind turbine under atmospheric boundary layers[J]. Ocean Engineering, 2023, 280: 114944.
[12] SALAH D, NOSIER M, HAMED A. Investigation of the performance of a horizontal-axis dual rotor wind turbine[J]. Scientific Reports, 2024, 14: 6208.
[13] YIN F, CHEN J, LI X, et al. A blade element momentum model for dual-rotor wind turbines considering inter-rotor velocity interferences[J]. Journal of Physics: Conference Series, 2022, 2265: 042058.
[14] AMORETTI T, HUET F, GARAMBOIS P, et al. Configurable dual rotor wind turbine model based on BEM method: Co-rotating and counter-rotating comparison[J]. Energy Conversion and Management, 2023, 293: 117461.
[15] SOMERS D. The S814 and S815 airfoils: 1991-1992[R]. 2004.
[16] SOMERS D. Design and experimental results for the S825 airfoil: 1998-1999[R]. 2005.
