[Gmsh] Problem subdividing a volume generated through a surface extrusion

[Rui Maciel]

I've defined a volume by extruding a surface through a curved path (see 
attached .geo file), which can be used to generate a 3D mesh without any 
incidents.  Yet, when I run the "refine by splitting" command something 
strange happens. It appears that some of the newly added nodes aren't 
placed in the extrusion path.  This leads me to believe that there is 
some problem with the way I've defined the surface, but I couldn't find 
anything suspicious with it.

So, can someone please take a look at the .geo file to see if there is 
something fishy in the way the volume was defined?


Thanks in advance,
Rui Maciel
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