Comparison of Turbulence Approaches Modelling the Flow Around the NACA 0012 Profile

Turbulence refers to the instability of air movements in which the speed has a whirling character at all points. This is a phenomenon often observed and generates sometimes violent movements that can disrupt flight in the case of aerodynamic interactions with aircraft. Bodily accidents due to turbulence are numerous, but they can be avoided with good control and prediction of the fluid behavior around this structure. In order to do this, designers are increasingly using numerical modeling to boost these aircraft's efficiency. We carried out a numerical analysis of the two-dimensional transonic flow on a NACA 0012 airfoil using the ANSYS/FLUENT software in order to compare the capacity of different turbulence models to predict results that are similar to those of experimental studies. The results were compared to the provided experimental data in the high Reynolds Number range of 9.10
⁶
. Then, a comparison based on the RANS, LES and Hybrid approach in order to obtain a better control of the profile performance. We demonstrated that Spalart-Allmaras model of Dettached Eddy Simulation gave good results for unsteady flow over the wing.