Re: [Getfem-users] interface condition question

[Jehanzeb Hameed]

Thanks! I do have a matching mesh, and now I will look to use getfem
to solve this problem with the suggestions given.

-Jehanzeb

On Wed, Jul 1, 2009 at 3:53 AM, Yves Renard<address@hidden> wrote:
>
>
> Hello,
>
> For such a simple situation (matching meshes), you can also use the
> set_dof_partition method of the mesh_fem object. See line 678 of
> tests/crack.cc to define the partition on a domain and line 833 to obtain the
> constraint matrix (you can preferably use the gmm::range_basis algorithm to
> select the constraints in the whole mass matrix instead of simply looking at
> the diagonal terms).
>
> For non-matching meshes, you have to use the (imperfect) interpolated fem
> object.
>
> Best regards,
>
> Yves.
>
>
>
>
> On mercredi 1 juillet 2009, Ronan Perrussel wrote:
>> Hello,
>>
>> it was not fully straightforward but you can find an example in:
>> getfem++/contrib/inter_element_test,
>> if you have matching meshes on the interface. If not it is certainly
>> possible but I am not the expert to explain how to do.
>>
>> I hope it helps,
>> Best regards,
>> Ronan
>>
>> Jehanzeb Hameed a écrit :
>> > Hello,
>> >
>> > I am investigating the possibility of using getfem for implementing a
>> > 2 domain problem, with an interface between the domains. I want to use
>> > continuous lagrange elements on each domain, and a jump condition at
>> > the interface. The jump condition will take the form (u_1 - u_2, v_1 -
>> > v_2), where u_1 and v_1 and test and trial functions for domain 1, and
>> > u_2 and v_2 are test and trial functions for domain 2.  The integral
>> > (u_1 - u_2, v_1 - v_2) is only over the interface between the domains.
>> >
>> > Can this be done relatively easily in getfem?
>> >
>> > Thanks,
>> > -Jehanzeb
>> >
>> > _______________________________________________
>> > Getfem-users mailing list
>> > address@hidden
>> > https://mail.gna.org/listinfo/getfem-users
>
>
>
> --
>
>  Yves Renard (address@hidden)       tel : (33) 04.72.43.87.08
>  Pole de Mathematiques, INSA-Lyon             fax : (33) 04.72.43.85.29
>  20, rue Albert Einstein
>  69621 Villeurbanne Cedex, FRANCE
>  http://math.univ-lyon1.fr/~renard
>
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>