Computational investigation of low-Reynolds-number unsteady flows past NACA 0012

Date

2026-01-01

Author

Güney, Mertcan
Anılır, Berkan
Kurtuluş, Dilek Funda

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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The aerodynamic characteristics of airfoils are significantly governed by the Reynolds number, particularly in the low Reynolds number regime (Re < 1 × 105), where viscous forces predominate over inertial forces, promoting early boundary layer separation and transition to turbulence. This study conducts two-dimensional unsteady numerical simulations on a NACA 0012 airfoil across Reynolds numbers ranging from 4 × 104 to 1 × 105, with the angle of attack varied incrementally from 0° to 20°. The results reveal that lower Reynolds numbers and higher angles of attack induce premature flow separation, leading to a diminished lift coefficient and an increased drag coefficient due to the altered separation point dynamics.

Subject Keywords

computational fluid dynamics, low Reynolds number, NACA 0012, unsteady aerodynamics

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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=105028036227&origin=inward
https://hdl.handle.net/11511/118671

Collections

Department of Aerospace Engineering, Article