[petsc-users] input mesh to DMPlex with duplicate nodes

[Matthew Knepley]

On Fri, Apr 5, 2013 at 5:20 PM, Dharmendar Reddy <dharmareddy84 at gmail.com>wrote:

> Hello,
>          Does DMPlexCreateFromCellList remove duplicate nodes in mesh ? I
> am creating mesh using gmsh Extrude options, I see that the resulting mesh
> has duplicate nodes. Currently i preprocess the mesh data to remove the
> duplicate nodes before passing it to DMPlex CreateFromCellList.
>

Do you mean nodes with the same coordinates? No, sometimes these are
legitimate, as in cohesive cell formulations.


> Is there a change in node ordering of the cell ?
>

No.


> One a different note,  any plans to provide functionality similar to
> DMPlexComputeCellGeometry for FVM based assembly. I am looking for things
> like the following to do cell wise assembly
> 1. Contribution to Voronoi volume associated with each point
> 2. Contribution to Surface area
> 3. Edge length
>

You can look at TS ex11 for the preliminary code. This will be incorporated
into DMPlex in the near future.

    Matt


> Thanks
> Reddy
> --
> -----------------------------------------------------
> Dharmendar Reddy Palle
> Graduate Student
> Microelectronics Research center,
> University of Texas at Austin,
> 10100 Burnet Road, Bldg. 160
> MER 2.608F, TX 78758-4445
> e-mail: dharmareddy84 at gmail.com
> Phone: +1-512-350-9082
> United States of America.
> Homepage: https://webspace.utexas.edu/~dpr342
>



-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
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