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Volume 16
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10.3390/en16020712
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Article

Repair Parameter Design of Outer Reinforcement Layers of Offshore Wind Turbine Blade Spar Cap Based on Structural and Aerodynamic Analysis

by
Hui Li
1,*,
Xiaolong Lu
1,
Wen Xin
2,3,
Zhihui Guo
1,
Bo Zhou
1,
Baokuan Ning
1 and
Hongbing Bao
4
1
School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang 110870, China
2
School of Mechanical Engineering, Shenyang University of Technology, Shenyang 110870, China
3
School of Mechanical Engineering, Liaoning Institute of Science and Technology, Benxi 117004, China
4
Jiangsu Key Laboratory of Hi-Tech Research for Wind Turbine Design, Wuxi 214174, China
*
Author to whom correspondence should be addressed.
Energies 2023, 16(2), 712; https://doi.org/10.3390/en16020712
Submission received: 4 December 2022 / Revised: 29 December 2022 / Accepted: 4 January 2023 / Published: 7 January 2023
(This article belongs to the Special Issue Theoretical and Technical Challenges in Offshore Wind Power)
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Abstract

The influence of the outer reinforcement layers on the repair structure and aerodynamic performance was studied. Firstly, a continuous damage mechanics model was established, and the 3D Hashin criterion and cohesive zone material model were used to analyze the damage repair model. The failure load deviation was 5.5%. Secondly, on the basis of the γ−Reθ transition model and SST–ω turbulence model, the aerodynamic analysis model of DU300 airfoil was established. The numerical simulation results showed that the lift coefficient and pressure distribution at the angle of attack of 10° and 15° were deviated from the experimental values by 2%. Furthermore, 27 structural repair models, nine 2D aerodynamic repair models, and a 3D full-scale blade model were designed. It was found that, when the repair length accounted for 60% of the total model length, the failure load increased by 22%, but the aerodynamic power with the repair length of 10 m was decreased by 0.137%. When the repair area was large and the repair height was from 4 mm to 6 mm, the failure load was greatly increased by about 30%, and the aerodynamic pressure distribution and static pressure field fluctuated significantly. The results show that the structural and aerodynamic characteristics were closely related to the repair parameters.
Keywords: offshore wind turbine blades; spar cap damage; outer reinforcement layers; repair parameters; structural performance; aerodynamic characteristics offshore wind turbine blades; spar cap damage; outer reinforcement layers; repair parameters; structural performance; aerodynamic characteristics

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MDPI and ACS Style

Li, H.; Lu, X.; Xin, W.; Guo, Z.; Zhou, B.; Ning, B.; Bao, H. Repair Parameter Design of Outer Reinforcement Layers of Offshore Wind Turbine Blade Spar Cap Based on Structural and Aerodynamic Analysis. Energies 2023, 16, 712. https://doi.org/10.3390/en16020712

AMA Style

Li H, Lu X, Xin W, Guo Z, Zhou B, Ning B, Bao H. Repair Parameter Design of Outer Reinforcement Layers of Offshore Wind Turbine Blade Spar Cap Based on Structural and Aerodynamic Analysis. Energies. 2023; 16(2):712. https://doi.org/10.3390/en16020712

Chicago/Turabian Style

Li, Hui, Xiaolong Lu, Wen Xin, Zhihui Guo, Bo Zhou, Baokuan Ning, and Hongbing Bao. 2023. "Repair Parameter Design of Outer Reinforcement Layers of Offshore Wind Turbine Blade Spar Cap Based on Structural and Aerodynamic Analysis" Energies 16, no. 2: 712. https://doi.org/10.3390/en16020712

APA Style

Li, H., Lu, X., Xin, W., Guo, Z., Zhou, B., Ning, B., & Bao, H. (2023). Repair Parameter Design of Outer Reinforcement Layers of Offshore Wind Turbine Blade Spar Cap Based on Structural and Aerodynamic Analysis. Energies, 16(2), 712. https://doi.org/10.3390/en16020712

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