[Gmsh] Conformal mesh, no tetrahedra in region, BooleanDifference

Loic Thulliez loicthulliez at hotmail.fr
Fri Jan 19 16:04:53 CET 2018

Hello all,

I am trying to create a conformal mesh with two volumes vol1 and vol2, with vol2 in vol1. I use the fonction vol3= BooleanDifference {Volume{vol1}; Delete;}{Volume{vol2};} to create a conformal mesh, since I want to keep the vol2 as it is to apply some boundary conditions to it.

But when I perform the meshing, the "no tetrahedra in region N°=Volume" occurs for each volume...

Sometimes with specific geometry values I succeed to mesh the all things, but it is not satisfactory. If I do vol3= BooleanDifference {Volume{vol1}; Delete;}{Volume{vol2}; Delete;}, it seems to work fine, but in this case the final result is not what I want.

Do you have any idea from where my problem is?

You will find my .geo files in attachement and the file to look at preferentially is "main.geo".

Thank you in advance for your help,


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