700.NUMERICAL INVESTIGATION OF AERODYNAMIC EFFICIENCY IN AN AIRFOIL TANDEM CONFIGURATION
Keywords:
aerodynamic optimization, airfoils, CFD 2D analysis, numerical modelingAbstract
Tandem airfoils, used in the fields of aerodynamics for race cars and aircraft designs, are a key part of current research due to the aerodynamic complexity they introduce, while offering performance benefits.A numerical 2D CFD analysis of a tandem airfoil system was performed in this paper to determine their optimal position-ing for achieving maximum aerodynamic efficiency and analyzing the resulting flow field. Simulations were conducted in Ansys Fluent using a high-quality mesh and refined boundary layer conditions, targeting y+<1. Key parameters analyzed include the lift coefficient CL, drag coefficient CD, theCL/CD ratio, and flow visualizations such as pressure, velocity, streamlines, velocity vectors, and turbulent kinetic energy. Results indicate that the optimal angle of attack for the variable airfoil is -25°, where the highes CL/CD ratio is obtained. However, flow visualizations show wake formation at this angle, highlighting the need for further aerodynamic optimization to balance efficiency and wake reduction.References
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