Warning in airfoil_template.geo

[JianouJiang]

Warning: Extrusion of periodic curves is not supported with the built-in kernel.
...
Warning: Skipping unknown surface 1026 in physical surface 7

I don't quite follow why the last few lines such as Physical Surface("back") = {1027}.

Why is it named 1027? It seems to be a random number, and this 1027 number is not referenced anywhere else...

However it seems that the code still runs? Could somebody explain this section please, thanks.

PS: I am using gmsh2 and openfoam10, so I modified something to get it work (some functions in gmsh2 only works for openfoam5).

[song4752]

@JianouJiang @thunil @yoonc5536
I encountered a similar issue with gmsh2 and OpenFOAM 10.
In addition to the warning mentioned above, I also faced a problem regarding the missing file "cloud_p.xy" in the directory "OpenFOAM/postProcessing/internalCloud/500/".

“
raise IOError("%s not found." % path)
OSError: OpenFOAM/postProcessing/internalCloud/500/cloud_p.xy not found.
”

The error message indicated that OpenFOAM was unable to find this file.
I am seeking advice on how to modify the files to resolve this issue.

[Ericyang978]

Hi, by any chance did you figure out the "OSError: OpenFOAM/postProcessing/internalCloud/500/cloud_p.xy not found." issue? i am running into the same problem