[Gmsh] Meshing problem for volumes using common surface and a coplanar surface for another volume

[Shawn Nipun]

Hello,
     I am trying to mesh a 3D structure where we have three cubic physical
volumes 300, 200 and 100. Bottom surface of 300 and top surface of 100 are
common which is 48. Bottom surface (40) of volume 200 is coplanar with
surface 48. When, I am trying to do the meshing with MathEval it is only do
the mesh for volume 200 and 100 except 300.

I can't find any solution as I think my geometry definition is correct.

Please help me regrading this matter. I have also attached the .geo file.

Best regards

-- 
Shawn Shakahwat Millat
Master of Science in Nanoelectronics System
Faculty of Electrical and Computer Engineering
Dresden University of Technology
Schnorrstarße 38, Room no: 0502
01069, Dresden
Germany.
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