A Study on the Effect of Turbulence Intensity on Dual Vertical-Axis Wind Turbine Aerodynamic Performance

Yanan Yang, Yang Cao (), Zhong Qian, Jian Wang, Yixian Zhu, Xia Chen, Wendong Zhang, Yujie Wang, Guoqing Wu and Shaohua Chen
Additional contact information
Yanan Yang: Department of Mechanical Engineering, Nantong University, No. 9, Seyuan Road, Nantong 226001, China
Yang Cao: Department of Mechanical Engineering, Nantong University, No. 9, Seyuan Road, Nantong 226001, China
Zhong Qian: Nantong Institute of Technology, No. 211, Yongxing Road, Nantong 226001, China
Jian Wang: Nantong Institute of Technology, No. 211, Yongxing Road, Nantong 226001, China
Yixian Zhu: Department of Mechanical Engineering, Nantong University, No. 9, Seyuan Road, Nantong 226001, China
Xia Chen: Nantong Institute of Technology, No. 211, Yongxing Road, Nantong 226001, China
Wendong Zhang: Department of Mechanical Engineering, Nantong University, No. 9, Seyuan Road, Nantong 226001, China
Yujie Wang: Department of Mechanical Engineering, Nantong University, No. 9, Seyuan Road, Nantong 226001, China
Guoqing Wu: Department of Mechanical Engineering, Nantong University, No. 9, Seyuan Road, Nantong 226001, China
Shaohua Chen: Department of Mechanical Engineering, Nantong University, No. 9, Seyuan Road, Nantong 226001, China

Energies, 2024, vol. 17, issue 16, 1-16

Abstract: Examining dual vertical-axis wind turbines (VAWTs) across various turbulence scenarios is crucial for advancing the efficiency of urban energy generation and promoting sustainable development. This study introduces a novel approach by employing two-dimensional numerical analysis through computational fluid dynamics (CFD) software to investigate the performance of VAWTs under varying turbulence intensity conditions, a topic that has been relatively unexplored in existing research. The analysis focuses on the self-starting capabilities and the effective utilization of wind energy, which are key factors in urban wind turbine deployment. The results reveal that while the impact of increased turbulence intensity on the self-starting performance of VAWTs is modest, there is a significant improvement in wind energy utilization within a specific turbulence range, leading to an average power increase of 1.41%. This phenomenon is attributed to the more complex flow field induced by heightened turbulence intensity, which delays the onset of dynamic stall through non-uniform aerodynamic excitation of the blade boundary layer. Additionally, the inherent interaction among VAWTs contributes to enhanced turbine output power. However, this study also highlights the trade-off between increased power and the potential for significant fatigue issues in the turbine rotor. These findings provide new insights into the optimal deployment of VAWTs in urban environments, offering practical recommendations for maximizing energy efficiency while mitigating fatigue-related risks.

Keywords: dual vertical-axis wind turbine system; turbulence intensity; CFD; performance improvement; renewable energy (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
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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