[Gmsh] Creating a domain with holes. i.e. inner boundaries from merged .stl files

[moritz braun]

Dear Colleauges

I have discovered, that I can describe the surface meshes for
the boundaries of a 3D domain with
Merge " surface.stl";
If I load a single surface
and add
Surface Loop(1) = {1};
Volume(1) = {1};
I can mesh the domain defined by the inside
of "surface.stl"

However, I require a domain with a spherical
outer surface  and a number of smaller spherical holes.
How would I go about constructing this?

regards

Moritz

-- 
Prof M Braun         Tel.:27-12-4298006/8027
Physics Department  Fax.: 27-12-4293643
University of South Africa (UNISA)
moritz.braun at gmail.com
P.O. Box 392
0003
UNISA
 South Africa
http://moritz-braun.blogspot.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.geuz.org/pipermail/gmsh/attachments/20150428/fa9df80b/attachment.html>