Hi Lilanath,
If you check step-50
https://www.dealii.org/developer/doxygen/deal.II/step_49.html#Importingfromexternalprograms
you can see an example where it works correctly (including the .geo file
https://github.com/dealii/dealii/blob/master/examples/step-49/example.geo
)
Maybe this is because
I have meshed my cad model in gmesh and provided bounday ids for different
surfaces by add physical group option and saved mesh in .msh file format.
the first few lines of .msh file look like this:
$MeshFormat
2.2 0 8
$EndMeshFormat
$PhysicalNames
4
2 13 "bottom"
2 14 "top"
2 15 "inner"
2 16 "o
