[Gmsh] Hexahedral mesh inside a sphere

[Deepak Garg]

Hi all

I am trying to generate a hexahedral 3d mesh inside a sphere of radius 1. I
am getting the error message

"Cannot tetrahedralize volume with quadrangles on boundary".

How to solve this problem? I am attaching my geo file. Any kind of help or
suggestions will be a great help.

Thank you
Deepak
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