Numerical Study on the Effect of Camber Size on the Performance of NACA 6-Digit Airfoils
DOI:
https://doi.org/10.38032/scse.2025.3.136Keywords:
Aerodynamics, Computational Fluid Dynamics, Airfoil Camber, Lift Coefficient, Drag CoefficientAbstract
The purpose of this study is to investigate how camber affects 6-digit airfoils. Three different National Advisory Committee for Aeronautics (NACA) airfoils (63-215, 63-415 and 64-012) have been investigated with three varying camber sizes. A high-fidelity computational fluid dynamics (CFD) approach was employed to determine the optimum angle of attack for the highest value of the lift-to-drag ratio. The results indicate that gradually increasing the camber size of 6-digit airfoils leads to an enhancement in the lift-to-drag ratio, ultimately improving turbine efficiency. NACA 63-215 airfoil was tested at several angles of attack, demonstrating a gradual increase in lift coefficient until the stall angle was reached, after which the lift decreased again. The stall angle and optimal working angle of attack for NACA 63-215 were found to be 15° and 5°, respectively. Among the three airfoils, NACA 63-415 had the highest lift-to-drag ratio at the optimum 5˚ angle of attack, with a maximum camber of 2.2% at 50% chord. This study provides a clearer understanding of how camber size affects aerodynamic performance, leading to enhanced turbine efficiency.
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Copyright (c) 2025 Zannatul Mim, Md. Fahim Hasan Ronok, Abir Shahorior Emon, Mim Mashrur Ahmed (Author)

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