NUMERICAL INVESTIGATION OF THE SUCTION AND BLOWING EFFECTS ON THE PERFORMANCE OF S826 AEROFOIL FOR WIND TURBINE APPLICATIONS

Document Type : Original Article

Authors

1 Mechanical Engineering Department, Faculty of Engineering ,University of Derna, Derna Libya.

2 Mechanical Power Engineering Dept., Faculty of Engineering, Port Said University

3 Mechanical Engineering Dept., Faculty of Engineering, Al-Azhar University, Cairo, Egypt.

Abstract

There is an increasing research focus on improving the efficiency of wind turbines. By employing suction and blowing as methods to manipulate the boundary layer, it is possible to address problems like separation and stall, resulting in enhanced lift production, less drag, and an overall increase in turbine efficiency. This research examines the influence of suction and blowing on the boundary layer of a specific wind turbine aerofoil, to analyze their impact on the overall aerodynamic performance. Computational Fluid Dynamics simulations, utilizing the RANS equations and the SST k- ω turbulence model, are utilized to obtain a more profound understanding of the impact of suction and blowing on the flow field surrounding the aerofoil. The computational fluid dynamics (CFD) results are compared to recently published experimental data to confirm their accuracy and reliability. The aerofoil's performance is evaluated by testing it at the angle of attacks ranging from 0 to 20º. The S826 aerofoil is selected for the current analysis. The inquiry involves analyzing the effects of suction and blowing on lift and drag coefficients. The lift and drag coefficients of the aerofoil are assessed at different blowing and suction flow rates. Although the suction and blowing may increase the lift coefficient of the aerofoil, it has been observed that it can enhance the lift-to-drag ratio in specific situations. The findings demonstrate the impact of suction and blowing processes on the properties of the boundary layer, underscoring the significance of meticulously choosing the rates of suction and blowing mass flow.
 
Special Issue of AEIC 2024 (Mechanical & Chemical and Material Engineering  Session)

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Journal of Al-Azhar University Engineering Sector
Volume 19, Issue 72
Special Issue for Al-Azhar Engineering 16th. International Conference (AEIC 2024)
July 2024
Pages 117-130

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