[Gmsh] Meshes with 27 nodes hexahedrons

[Michel Dupront]

Hello,

I am trying to generate a 27 nodes hexahedron mesh.
I have a test.geo file to create a structured hexahedron
mesh. When I run:
$ gmsh test.geo -3 -order 1
I get a first order hexahedron mesh. Here a hexahedron has
8 nodes. 
If I run with -order 2 I get hexahedrons with 20 nodes. 
How do I get hexahedrons with 27 nodes ?

Thanks for any help. 


 		 	   		  
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