Effect of Mesh Type on Numerical Computation of Aerodynamic  Coefficients of NACA 0012 Airfoil

Mostafa Abobaker; Sogair Addeep; Lukmon O Afolabi; Abdulhafid M Elfaghi

Authors

Mostafa Abobaker Department of Aeronautical Engineering, Faculty of Engineering, University of Zawia, Libya
Sogair Addeep Department of Aeronautical Engineering, Faculty of Engineering, University of Zawia, Libya
Lukmon O Afolabi Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Batu Pahat, 86400l Johor, Malaysia
Abdulhafid M Elfaghi Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Batu Pahat, 86400l Johor, Malaysia

Keywords:

Mesh Type, NACA 0012, Airfoil, CFD

Abstract

Mesh type and quality play a significant role in the accuracy and stability of the numerical computation. A computational method for two-dimensional subsonic flow over NACA 0012 airfoil at angles of attack from 0o to 10o and operating Reynolds number of 6×106 is presented with structured and unstructured meshes. Steady-state governing equations of continuity and momentum conservation are solved and combined with k- shear stress transport (SST-omega) turbulence model to obtain the flow. The effect of structured and unstructured mesh types on lift and drag coefficients are illustrated. Calculations are done for constant velocity and a range of angles of attack using Ansys Fluent CFD software. The results are validated through a comparison of the predictions and experimental measurements for the selected airfoil. The calculations showed that the structured mesh results are closer to experimental data for this airfoil and under studied operating conditions.