[Safasml]

I generated an airfoil geometry in DesignModeler and solved the flow over it using CFX. In the CFD-Post I inserted a polyline in which the points are exactly the same with the ones used in DesignModeler to create the 3d curve. But, the problem is that the wireframe doesn’t match the polyline precisely and I think the polyline is the correct curve. I attach the figure to better express my point. Doesn’t the wireframe show the geometry created before? Or what’s the problem?

[Stel]

As far as I understand the Wireframe will be just a piecewise-linear interpolation of the actual mesh points located on the edges that divide faces. Thus, if it looks a "broken" curve for you, it could be because your mesh is coarse (maybe not coarse from a numerical sensitivity perspective, but actually for the graphic resolution you expect from it). I believe (really not sure) that the Polyline, on the other hand, is a spline interpolation of multiple points created by CFD Post.

[Gert-Jan]

The wireframe follows your mesh. To me, it looks like the mesh is too coarse.

(The wireframe is displayed when the angle between adjacent elements is larger than 30°. You can increase this value to e.g. 45°. Then it will display less lines. But that won't help in your case.)