[Gmsh] Refined Mesh - extraneous nodes

[Negi, Ashish]

Hi Mikhail,

Thanks for your help.

Actually, I do not use MSH file in my project. I have GMSH library
integrated with my FEM library which gets the mesh data directly from
GModel object. After seeing your reply, I defined one physical group and
added it in all the geometrical entities (points, edges, faces and
volume). But this did not help. I still have extraneous nodes which are
not in TET mesh.

Ashish

-----Original Message-----
From: gmsh-bounces at ace20.montefiore.ulg.ac.be
[mailto:gmsh-bounces at ace20.montefiore.ulg.ac.be] On Behalf Of Mikhail
Artemiev
Sent: Thursday, February 10, 2011 8:08 AM
To: gmsh at geuz.org
Subject: Re: [Gmsh] Refined Mesh - extraneous nodes

Hi Ashish.
I think you can try to use 'phisycal entity' to export tetrahedral mesh 
(without triangles, lines and points) into .msh file and see what
changes.

>Hello Everyone,
>
>I meshed a rectangular block using TET (4 noded tetrahedron). Then, I
>refined the mesh by calling 'RefineMesh' method. The attached file has
>refined mesh data. There are 589 nodes and 2896 elements (2192 TET +
704
>line, triangular and point elements). I expected all the 589 nodes be
>part of 2192 TET elements. But, only 553 nodes form TET mesh elements.
>This means there are some line or triangular elements which are not
part
>of TET mesh. My FEM solver fails which expects node number till 553 but
>there are some TET with node number more than this.
>
>Does anyone know the reason?
>
>Thanks,
>
>Ashish

Mikhail Artemiev 


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