Reduction of flow separation and overall drag of the NACA 4415 airfoil by creating grooves on it
Subject Areas : Journal of New Applied and Computational Findings in Mechanical Systems
1 - Faculty of Imam Ali University (AS)
Keywords: NACA 4415 airfoil, Aerodynamic, Lift increase, CFD, Fluid mechanics,
Abstract :
Lift force is essential in the movement of bodies in fluid environments, as it enables aerodynamic objects to shift perpendicularly to the direction of their motion. Airfoils are specifically designed with unique geometries to efficiently generate lift force, enhancing the performance of aerial or marine structures. Despite the use of standardized and widely adopted airfoil designs across various industries, further optimizations are still possible to increase efficiency. In this study, the lift force generated by slotted NACA 4415 airfoils, commonly used in aircraft, UAVs, and wind turbines, is examined. Using a full factorial experimental design, the effects of slot number and depth on lift force at various angles of attack and at a constant Reynolds number were evaluated. The results indicate that slots have minimal impact on lift force at certain angles of attack, while leading to significant increases at others. For example, at an angle of attack of 13 degrees, adding slots to the airfoil surface can increase lift force by up to 31%.
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