Enhancing Efficiency of Darrieus Wind Turbines through Experimental
and Numerical Investigations of Double Darrieus Configurations
Masters of science (MSc) 2023
By
Israa Idris Abdelkarim Idris
Supervisors
Prof. Dr. Yahya Eldreeny
Mechanical Engineering Department
Faculty of Engineering College of Engineering and Technology
Alexandria University
Mechanical Engineering Department
College of Engineering and Technology
Arab Academy for Science and Technology and Maritime Transport
Dr. Iham Zidane
Mechanical Engineering Department
College of Engineering and Technology
Arab Academy for Science and Technology and Maritime Transport
Abstract
This research presents a comprehensive investigation into the performance and aerodynamic characteristics of a double-blade Darrieus wind turbine employing the NACA 0018 airfoil. The study employs a dual approach, combining wind tunnel experimentation with numerical simulations facilitated by Ansys software, to scrutinize the turbine’s behavior under varying wind conditions. Experimental measurements encompass torque and power output, while computational fluid dynamics simulations yield insights into flow patterns and pressure distribution. The results conspicuously demonstrate a close concordance between the outcomes of experimental and numerical methodologies, thus affirming the computational model’s precision. Additionally, the analysis underscores the profound influence of wind speed on turbine performance, shedding light on the advantageous aerodynamic traits of the NACA 0018 These findings make substantive contributions to the domain of wind turbine design optimization and furnish valuable insights that have implications for forthcoming research in renewable energy. Moreover, this research pinpoints the optimal configuration in the experimental approach for the double-blade Darrieus vertical axis wind turbine. The results revealed that the most efficient position is situated at a distance of 4 cm and 3 cm from the rotor, which corresponded to 40% to 30% in terms of the distance ratio. Notably, a 6.7% Power coefficient improvement is observed when comparing single blade and double blade numerical results.
Published Papers
Afify, R.S., Idris, I.I., Eldrainy, Y.A., Zidane, I.F., ”Enhancing Efficiency of H-Darrieus Wind Turbines through Experimental and Numerical Investigations of Double Darrieus Configurations”, Journal of Advanced Research in Applied Sciences and Engineering Technology, pp. 1-9, ISSN: 2462-1943, 2023.
