The task in this study was to process the analysis of turbulent air flow around the aerodynamic profile fan automotive joint using two independent computer programs. After the simulations, the obtained results were slowed down to determine the validation of the quality of the used programs. In the beginning, the theoretical basis of fluid mechanics is processed, the regimes of lamillary and turbulent flow are described, the very beginnings of aerodynamics in the automotive industry are presented, and the basics of Computer Fluid Dynamics (CDF) are presented. The design of the simulation was reflected using ANSYS and SimScal programs on the NACA 4412 profile with a width of 1500 mm. This profile length is selected according to the online catalog of the store for making automotive joints. The geometry of the model was created using Autodesk Inventor applications for numerical analysis. After the simulations for several different input parameters, the results are graphically presented, the obtained results are compared and the results are validated.