Aerodynamic Profile Modification of a NACA 0012 Aerofoil for Enhanced Lift-Drag Characteristics at Low Reynolds Number

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Anupam Krishnan
Sukanta Roy


This article discusses the enhanced lift-drag ratio of a geometrically modified National Advisory Committee for Aeronautics 0012 aerofoil at a low Reynolds number of 40000. The study involves validating the Reynolds Averaged Navier Stokes Transition Shear Stress Transport model for the analysis of flow around the subject aerofoil with the modified profile for angles of attack ranging from 0 to 10°. The coefficient of lift to drag increased by 70% for the modified aerofoil at an angle of attack of 6°. The extent of the laminar separation bubble on the modified airfoil is reduced by 40% compared to the standard aerofoil at an angle of attack of 8°. The modified aerofoil cross-section does not involve much manufacturing complexity and can be deployed in small-scale wind turbines operating at low wind speeds.


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Author Biographies

Anupam Krishnan, Kerala Water Authority, India

Assistant Engineer

Kerala Water Authority

Palakkad, Kerala


Sukanta Roy, Faculty of Engineering and Science, Curtin University, Malaysia

Senior Lecturer & Head of Department

Department of Mechanical Engineering

Faculty of Engineering and Science

Curtin University

CDT 250, 98009 Miri, Sarawak