Gmsh does not recognize all surfaces associated to line
 

Hello all,


I am having some trouble doing the surface mesh of a strut brace wing geometry imported in gmsh as an stp file.


The geometry should be watertight (I also verified it in Pointwise) but when I import it in gmsh and I start meshing, there is a line (the one corresponding to the intersection of the wing with the fuselage fairing) that seems not to recognize all the surfaces associated to it. So, when I am doing for example the transfininte, it is meshing only one surface.


You can see from the figure geosbw.png the full geometry I am considering, in bbspline28 there's the problematic line, that has associated to it only one surface (the one from the wing) instead of two (the additional one from the fairing) and in figure meshsbw you can see what happens when I do the transfinite on that line (only the surface associated to the edge is meshed accordingly).



I tried both opencascade and built-in but the behaviour is the same.



Is it a problem of the stp file? As I said, assembling the same stp in Pointwise for example it's not a problem and I can mesh it fine.


Any help on this will be much appreciated.


Thank you