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Research Article Volume 9 Issue 4
Turbulent flow velocity profiles downstream of an airfoil at different angles of attack (α)
Paz Mauricio Leonel, Morales Oscar Adrián, Paz Juan Antonio, Magaña Tonatiuh, Reyes Priscila Alexandra, Aguirre Alexis Erubiel
Received: November 19, 2025 | Published: December 26, 2025
Citation: Leonel PM, Adrián MO, Antonio PJ, et al. Turbulent flow velocity profiles downstream of an airfoil at different angles of attack (α). Aeron Aero Open Access J. 2025;9(4):219-227. DOI: 10.15406/aaoaj.2025.09.00240
Abstract
This investigation studied the influence of the angle of attack (α) on the turbulent flow behavior downstream of a NACA0015 airfoil installed in a subsonic wind tunnel. Velocity profiles were determined using a Prandtl tube, and a smoke flow visualization technique
was used to visualize wake formation on a Clark Y airfoil. The results indicated that the average velocity decreases by 33% when the airfoil’s angle of attack changes from 0° to 12°. Furthermore, it was found that at α=12°, a flow instability section occurs, generating a
wake that occupies approximately 40% of the total velocity profile area.
Keywords: velocity profile, airfoil profile, angle of attack, wind tunnel, wake, smoke flow visualization
©2025 Leonel, et al. This is an open access article distributed under the terms of the, which permits unrestricted use, distribution, and build upon your work non-commercially.