[Gmsh] Build tetrahedral mesh with structured region

[Robert Funnell]

On Wed, 18 Apr 2018, Octavio Castillo Reyes wrote:

> Dear all,
>
> I'm working with Gmsh for electromagnetic simulations. So far I have only
> worked with unstructured tetrahedral meshes, however I would like to create
> structured regions.
>
> So, Do you know if it is possible to create structured regions of
> tetrahedrons within an unstructured tetrahedral mesh? If possible, what is
> the know-how?
>
> Thank you for your support
>
> Best regards
>
> O.

Since no-one else has answered, I'll mention something that may be 
relevant. In 1986 we published a paper (DOI:10.1049/cae:19860050) that 
proposed a mesh-generation method that involved creating a structured 
tetrahedral mesh for the interior of an object and then generating an 
unstructured tetrahedral mesh to fill in between the object's and its 
structured core. The method was also described in a master's thesis 
(Boubez, 1987); a link to the thesis can be found at 
http://audilab.bme.mcgill.ca/~funnell/pub.html#theses .

- Robert