[Gmsh] Higher order quadrangular mesh.

Vijay S. Mahadevan vijay.m at gmail.com
Wed Oct 6 23:46:59 CEST 2010

Hi Christophe,

I actually just tried it and it works perfectly with the nightly
build. Again, thank you very much for the prompt fix !

I did find something weird in the gui in the new version. If I used
the windows GUI version to create even a first order quad mesh with
the given geo file, it shows a node in the middle of every element
(similar to a bubble). But writing out the mesh file and then
reloading it removes this anomaly. Maybe this is just an error in the
interface portion of it. I thought that you should know because it is
annoying to see a node that is not supposed to be there for a given
order element and gives a wrong impression of the final mesh being
generated. Hope that helps to replicate the bug.


On Wed, Oct 6, 2010 at 3:44 PM, Vijay S. Mahadevan <vijay.m at gmail.com> wrote:
> Thanks for the prompt reply. I will try this tonight and will let you
> know if I still have issues.
> Vijay
> On Wed, Oct 6, 2010 at 2:30 PM, Christophe Geuzaine <cgeuzaine at ulg.ac.be> wrote:
>> On 06/10/10 01:58, Vijay S. Mahadevan wrote:
>>> Hi,
>>> I have a nice 2-D lattice that I want to discretize using higher order
>>> quadrangles. Since the GUI version does not seem to support p>2, I
>>> work with the command line version (ver:  2.4.2). But it does not
>>> yield correct results. The first and second order meshes work
>>> correctly and display as they should but the higher order meshes are
>>> buggy (the internal nodes per element are incomplete and
>>> inconsistent). I would really appreciate it if you can help me out in
>>> finding the error in the geo file for using higher order
>>> discretizations.
>>> I've attached the geometry file with the mail along with the discrete
>>> mesh for 2nd and 3rd order quads. If you need anything else, do let me
>>> know.
>> Hi Vijay - this should be fixed in ewcent nightly snapshots. Could you give
>> it a try?
>>> Thank you,
>>> Vijay
>>> _______________________________________________
>>> gmsh mailing list
>>> gmsh at geuz.org
>>> http://www.geuz.org/mailman/listinfo/gmsh
>> --
>> Prof. Christophe Geuzaine
>> University of Liege, Electrical Engineering and Computer Science
>> http://www.montefiore.ulg.ac.be/~geuzaine