Re: [Getfem-users] XFEM Element

[Yves Renard]

Le mardi 3 juillet 2007 15:51, Veronique a écrit :
> Hello,
> I would like to use Xfem elements for an electrostatic problem with two
> different permittivities inside and outside the level set. So I will
> have a discontinuous field accross the level-set.
> I don't find an example to create a Xfem as proposed in the documentation:
> Xfem xf(pf);
> xf.add_function(pXf,pXg,pHh,ind);
> Could you help me?
> Best regards,
> Véronique Rochus

Could you specify a little bit more your problem ?
Your field is discontinuous, but does it have a singularity ?
Do you have a specific boundary equation concerning the jump across the 
level-set ?
If the answer is no to the two last questions, you can just use 
a "mesh_fem_level_set" object which represents a discontinuity accross a 
level-set. A example of use (but too much complicated for your use) is the 
test program 
tests/crack.cc

-- 
Yves.

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  Yves Renard (address@hidden)       tel : (33) 04.72.43.80.11
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