[Gmsh] Swiss Cheese in GMSH

[David Colignon]

Hi Lorenzo,

you can start with:

http://geuz.org/gmsh/doc/texinfo/gmsh.html#t5_002egeo

and the "CheesHole" function within :-)

Regards,

Dave

--
David Colignon, Ph.D.
Collaborateur Logistique du F.R.S.-FNRS
CÉCI - Consortium des Équipements de Calcul Intensif
ACE - Applied & Computational Electromagnetics
Institut Montefiore B28
Université de Liège
4000 Liège - BELGIQUE
Tél: +32 (0)4 366 37 32
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On 28/03/11 20:46, Lorenzo Isella wrote:
> Dear All,
> I hope that the title of the email will not be misleading.
> I have just started to learn how to use fipy, which in turns relies on Gmsh for non-trivial meshes.
> My problem is the following: I am given a computational domain which looks like a cube having some spherical cavities in
> its interior.
> That is why I was referring to Swiss cheese in the email title.
> To be more precise the situation is the following: all the spherical cavities have the same radius R and I am given a
> simple text file like
>
> x_1 y_1 z_1
> x_2 y_2 z_2
> ..............
> x_N y_N z_N
>
> where
> x_i y_i z_i
> are the 3D coordinates of the i-th cavity.
> Now, what I would like to do is to script Gmsh in such a way to
> (1) generate a cube having side [-L/2, L/2] along x, y and z
> (2) introduce the N cavities at the right positions
> (3) mesh the resulting object being able in particular to refine the mesh around the cavities (which is where I need
> more accuracy).
>
> Is anything like that doable with GMSH? According to what I read on the fipy mailing list and saw on the gmsh tutorials,
> the answer is a definite yes, but some help is needed.
> Even a simple script which just a couple of cavities would help me a lot.
> Any suggestion is appreciated
>
> Lorenzo
>
> PS: the overall shape of the computational domain is not essential for me, provided it is large enough. In other words:
> the cube can be replaced with a large sphere or a cylinder if it eases the numerical work.
>
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