Markus,

I am using FESystems, along with the FECollection, much as is implemented
in step-46 of the tutorial.

On Wed, Feb 1, 2012 at 2:04 PM, Markus Bürg <[email protected]> wrote:

> **
> Hello Jason,
>
> I am not sure, if FECollection is the correct class to use. Perhabs you
> want to have look at the FESystem class.
>
> Best Regards,
> Markus
>
>
>
> Am 01.02.2012 18:14, schrieb Jason Sheldon:
>
> Hi all,
>
> I am working on an FSI solver using deal.ii.  Currently I am attempting to
> set up a partitioned scheme using block(objects) and an hp::FECollection.
> I have 3 blocks in my system, one for the Fluid, one for the Structure, and
> one for the Mesh Motion.  The equations governing the fluid and the mesh
> motion need to be defined on the same region of the domain.  Currently I do
> not know of a way to do this this, and only one FESystem gets any dofs
> defined for it.
>
> In brief the steps I am using are:
>
>    - Generating the appropriate FiniteElement's for fluid, structure, and
>    mesh motion
>    - Adding these elements to the hp::FECollection
>    - Setting the active fe index for the cells over the domain
>    - Counting the dofs per component with the
>    DoFTools::count_dofs_per_component method
>
> When this is finished, it recognizes 0 dofs for the mesh motion (shown
> below), as the active fe index for all those cells are associated with the
> fluid.
>
> (
> DEAL:CC-00::Number of DOFS: 188269, (by partition: 188269)
> DEAL:CC-00::Number of blocks: 3
> DEAL:CC-00::Dofs by Block : 1836+186433+0
> DEAL:CC-00::Block 0: 1,1,1,1,0,0,0,0,0:  1836
> DEAL:CC-00::Block 1: 0,0,0,0,1,1,1,0,0:  186433
> DEAL:CC-00::Block 2: 0,0,0,0,0,0,0,1,1:  0
> )
>
> Any assistance with this problem would be appreciated.  Thanks,
>
> --
> -Jason Sheldon
>
>
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-- 
-Jason Sheldon
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