[Gmsh] import CAD geom with multiple volumes

[Pei-Ying Hsieh]

Dear GMESH experts:

I really enjoy using gmsh.  It is very useful to me so far for CFD 
projects.

Now, I am starting a new Transient Heat Transfer project.  This is an 
enclosure with several mechaincal components inside the enclosure.  The 
complex geometry was generated using SolidWorks (this CAD file is an 
assembly, not a single part).  SolidWorks can export to stl format.  When 
I saved the assembly to stl format and imported into gmsh, it looks like 
gmsh cannot distinguish all the different volumes.  Is there a way to 
handle complex geometry like this in gmsh?  Thanks!

Best Regards,

Pei-Ying

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