error in periodic surface definition
Dear gmsh developers, I'm writing here since I am pretty new to this software and I'm encountering an issue which I'm not able to solve thanks to what I can find in the documentation or online. I need to impose periodic BC to the geometry I'm using, but I always encounter the error: "Could not find counterpart curve ## with end points ##-##" and I'm not able to understand why. The geometry is extremely simple since is nothing but a spherical wedge from which I have subtracted from the center a cylinder.
I'm attaching here the small script I'm using. Can someone help me finding out my error?
Thanks a lot for your precious cooperation!
Yours,
Marco