This thesis, part of the IDINTOS project has the purpose to calibrate and validate the CFD methods, analyzing and trying to replicate the results previously obtained at the PoliMi wind tunnel.
In the present work the STAR-CCM+ software, by Cd-Adapco, has been used to simulate a variety of cases. First the mesh has been validated, looking for a stability condition, changing the size of control volume and refining or making coarser both the wing meshes. Since the stability dimensions have been found, comparing the results given on some aerodynamic coefficients and choosing the dimensions which gave the stable results for all the coefficients, the chosen mesh has been used to simulate free air and wind tunnel conditions.
The model has first been simulated in 1:1 scale, free air and cruise conditions, with a fully turbulent flow, then the geometry has progressively been translated to the wind tunnel conditions, scaling dimensions to 1:4, adding the pylon support and then the wind tunnel walls.
To completely validate the data obtained at the wind tunnel facility, different kind of solvers have been used, switching from the k-ε full turbulence model, to the k-ω with fixed transition model.
Once the physics have been set, several conditions of α and β wind incidence angles have been tested and recreated, managing to a redefinition of the aerodynamic surfaces that rule the lateral directional dynamics (posterior wing fences, tail fin).
