Effect of Corrugation on the Stall Angle Characteristics of NACA 0012 Airfoil: A Numerical Approach
DOI:
https://doi.org/10.38032/scse.2025.3.176Keywords:
Corrugated Airfoil, Stall Angle, Flow Separation, ANSYS FLUENTAbstract
The aim of the study is to numerically examine the effect of corrugation on the stall angle characteristics including the coefficient of lift and drag NACA 0012 airfoil. The FLUENT module of ANSYS version 2020 R1 software was employed for performing the simulations to compute the lift coefficient and drag coefficient at various incidence angle (α) and a Reynolds number (Re) of definite value 2.5×105. A sinusoidal corrugation profile was inserted at the apt 1/3rd of the chord on the upper surface. The numerical results indicate that the corrugation delays the flow separation improving the stall characteristics whereas some penalty on other aerodynamic characteristics was also noticeable such as lower value of lift coefficient at low angle of attack, higher drag coefficient compared to smooth airfoil. The stall angle is delayed by 3° and the maximum lift coefficient value significantly increased. Hence corrugation can be implemented to enhance some particular characteristics while sacrificing one or more other aerodynamic performances. The optimization of the profile is required to achieve the desired improvement and minimize the adverse effects.
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