Influence of Numerical Mesh Type on Airfoil Aerodynamic CharacteristicsPezdevšek, Marko (Avtor) Fike, Matej (Avtor) Predin, Andrej (Avtor) Hren, Gorazd (Avtor) computational fluid dynamicsNREL S809structured meshunstructured meshhybrid meshIn this paper, we will examine how different mesh types affect the aerodynamic characteristic of an airfoil. The airfoil used for this paper was the NREL S809. Three different mesh types were created, a blocked structured mesh, an unstructured mesh and a hybrid mesh containing a blocked structured mesh near the surface of the airfoil and an unstructured mesh on the outside perimeter. Steady state simulations were performed for angles of attack between 0°and 22°. Lift and drag coefficient for all created meshes were compared to experimental results from literature. From angles of attack between 2° and 8° all three meshes predict similar lift and drag coefficients. We encountered problems with convergence for the unstructured mesh at angles of attack higher than 8°. Structured and hybrid mesh had similar lift and drag coefficients across all angles of attack.Univerza v Mariboru, Univerzitetna založba20192023-12-04 14:34:15Znanstveno delo86470sl