A Scaled Numerical Simulation Model for Structural Analysis of Large Wind Turbine Blade

Guoqiang Gao, Hongsheng Shu, Zixin Yi, Shuyi Yang, Juchuan Dai and Fan Zhang ()
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Guoqiang Gao: School of Electromechanical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
Hongsheng Shu: School of Electromechanical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
Zixin Yi: School of Electromechanical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
Shuyi Yang: School of Electromechanical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
Juchuan Dai: School of Electromechanical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
Fan Zhang: School of Electromechanical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China

Energies, 2024, vol. 17, issue 19, 1-19

Abstract: Numerical simulation technology is a crucial tool for reducing costs and increasing efficiency in the wind power industry. However, with the development of large-scale wind turbines, the computational cost of numerical simulation has gradually increased. This paper uses the geometric similarity, structural similarity criterion, Reynolds similarity and boundary layer theory to establish a scaled model of the geometric three-dimensional shape, composite material, and finite element mesh of large wind turbine blades. The study analyzes the aerodynamic, gravitational, and centrifugal load variations within the scaled model. The proportional relationship between the scaled model’s operating parameters, the numerical simulation’s environmental parameters, and the mechanical response parameters is established. These parameters are coordinated to ensure the similarity of the blade structure and the fluid dynamics. For a geometric scale factor of 0.316, the relative difference in maximum deflection is 4.52%, with a reduction in calculation time by 48.1%. On the premise of ensuring the calculation accuracy of the aerodynamic and structural response of the blade, the calculation efficiency is effectively improved.

Keywords: wind turbine blade; numerical simulation; scaled model; similarity criteria (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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