Aerodynamics Performance Evaluation of S834 Airfoil Using Different Slot Configuration as a Passive Flow Control Method

Document Type : Original Research Papers

Authors

1 Mechanical Engineering Department, Benha Faculty of Engineering, Benha University, Egypt.

2 Department of Mechanical Engineering, Benha Faculty of Engineering, Benha University, Benha

3 Mechanical Engineering Department, Benha Faculty of Engineering, Benha University, Egypt. Currently Professor and Dean of Higher Institute of Engineering and Technology at Mahala El-Kobra, Egypt

Abstract

The global energy crisis has prompted a shift toward renewable energy to reduce emissions and ensure a sustainable future. Wind energy, in particular, has received a lot of attention because it is so widely available. Wind turbines, which convert wind kinetic energy into mechanical energy, are divided into two types: horizontal-axis and vertical-axis turbines. Nevertheless, one of the most significant challenges to wind turbine performance and sustainability is flow separation, which reduces aerodynamic efficiency. This study utilizes a two-dimensional (2D) Computational Fluid Dynamics (CFD) to examine six slot design configurations for the S834 airfoil at a wind speed of 6 m/s. The goal is to assess their effectiveness in reducing flow separation and to compare the performance of the top-performing slot to that of the unslotted airfoil. The findings show that slot performance is heavily influenced by its configuration and dimensions. The appropriate slot design increases the maximum lift-to-drag ratio by 5% while significantly reducing vortex formation on the airfoil's suction side as shown by velocity contour and streamlines. Static pressure coefficient (CPs) distributions support these findings by demonstrating increased aerodynamic efficiency. These findings highlight the effectiveness of slot implementation in improving wind turbine performance. Slotted airfoils have the potential to advance wind energy technology by reducing flow separation and increasing efficiency, thereby supporting global sustainability initiatives and future renewable energy solutions.

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Benha Journal of Applied Sciences
Volume 10, Issue 4 - Serial Number 4
Engineering Sciences
April 2025
Pages 175-184

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