On Wed, 8 Feb 2012, David Knezevic wrote:
> On 02/08/2012 06:09 PM, Mauro Werder wrote:
>> I've never done it but here my thoughts: It should be possible to
>> assemble the 1D system when looping over the boundary elements of the
>> 2D mesh (as is usually done for the BCs) as all the machinery is
On 02/08/2012 06:09 PM, Mauro Werder wrote:
> I've never done it but here my thoughts: It should be possible to
> assemble the 1D system when looping over the boundary elements of the
> 2D mesh (as is usually done for the BCs) as all the machinery is in
> place to do this.
All the machinery is the
I've never done it but here my thoughts: It should be possible to
assemble the 1D system when looping over the boundary elements of the
2D mesh (as is usually done for the BCs) as all the machinery is in
place to do this.
Mauro
At Wed, 8 Feb 2012 22:07:16 +,
Sylvain Vallaghe wrote:
>
> Hi,
>
Thanks Jed! very nice explanations
Best Regards,
Ali
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On 02/08/2012 05:07 PM, Sylvain Vallaghe wrote:
> I'm trying to implement a 2d problem in libmesh where I have two scalar
> variables : one is 2d in the whole domain, the other is 1d and mapped on one
> of the boundaries of my domain. These two variables are coupled due to the
> global variati
Hi,
I'm trying to implement a 2d problem in libmesh where I have two scalar
variables : one is 2d in the whole domain, the other is 1d and mapped on one of
the boundaries of my domain. These two variables are coupled due to the global
variational formulation. I don't know how to define my 1d va
On Wed, Feb 8, 2012 at 20:38, Roy Stogner wrote:
> > 3- Support for an Uzawa solver (stokes problem)
>
> This is doable in libMesh application code, but it wouldn't be as easy
> as many other solvers, and it isn't built in to the library.
>
For simple Stokes problems, PETSc can construct this au
On Wed, 8 Feb 2012, water force wrote:
> Yes this algorithm seems uncommon because the material properties
> associated with these meshes are different. Is there any other
> elegant way to do this?
It should have been obvious from your code, but no - if your
material properties affect the Jacobi
Thanks for info
Best Wishes,
Ali
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Thanks for your comments! A bug in my assemble function did result in the
segfault. Actually I used attach_assemble_object in my code but made a
mistake when passing the string sys_name to the constructor in the assembly
class. Yes this algorithm seems uncommon because the material properties
assoc
Nothing particularly tricky about the FVM interface so long as you are (i) cell
centered and (ii) interested only in nearest face neighbors. In that sense it
is a natural subset of the DG support. If you want a node centered scheme with
dual-mesh control volumes there will be many tricks - I wo
Thanks you very much Roy,
For periodic BC that's enough for me. For FVM computations do we have a clean
interface? or it is done
with tricks? I guess this would be the more time consuming part
Regards,
Ali
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On Wed, 8 Feb 2012, Derek Gaston wrote:
On Feb 8, 2012, at 10:38 AM, Roy Stogner wrote:
libMesh can do FVM with small flux stencils by using discontinuous
shape functions for those variables; for larger stencils you'd be out
of luck, since libMesh wouldn't be able to extend the parallel
ghost
On Feb 8, 2012, at 10:38 AM, Roy Stogner wrote:
> libMesh can do FVM with small flux stencils by using discontinuous
> shape functions for those variables; for larger stencils you'd be out
> of luck, since libMesh wouldn't be able to extend the parallel
> ghosting or sparsity pattern as far as you
On Wed, 8 Feb 2012, Ali Roustaei wrote:
> I'm looking for a flexible computational environment, currently my needs
> right now are:
>
> 1- Support for P1isoP2 elements, P0,P1,P2 and Q0,Q1,Q2 and Q0isoQ2
> 2- Support for discontinuous elements P1disc, Q1disc
All of this is easy enough in libMes
Hi,
I'm looking for a flexible computational environment, currently my needs right
now are:
1- Support for P1isoP2 elements, P0,P1,P2 and Q0,Q1,Q2 and Q0isoQ2
2- Support for discontinuous elements P1disc, Q1disc
3- Support for an Uzawa solver (stokes problem)
4- Periodic Boundary Conditions
5-
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