The mesh of the part is really important at the moment to obtain a reliable and in an acceptable time of calculation.
The knowledge of how the postprocesing software works indicates us that achieve an adapted mesh to the part geometry and the reduction of the aspect ratio of the mehs elements (skewness) bring us closer to a most real result.

Using anyone of the more important software of CFD obtains comparative results of the behavior of a component or set. Obtaining the necessary conclusions to redesign components or to obtain stiffness data.