Hi Guillaume,
yes I have looked at the documentation to understand it but I cannot
understand it fully though.
The entries for the point entity inside the $Periodic I think I
understand (please correct me If I am wrong?).
For example:
0 8 1 // 0 indicating it is point, 8 and 1 are slave and master tag
entity
Affine 1 0 0 5 0 1 0 0 0 0 1 0 0 0 0 1 // indicating the Affine
transformation to go from master to slave
1 // Number of entities
8 1 // slave node number, master node number
For the Line entity Inside $Periodic I have for example
1 12 2 // 1 indicating it is a line , Not clear what 12 and 2
correspond to as they are not corresponding node numbers
Affine 1 0 0 5 0 1 0 0 0 0 1 0 0 0 0 1
43 // Number of nodes
xx xx // Matching node numbers
I cannot seem to understand 12 and 2 in the first line after 1 as 12 and
2 are not corresponding point/node numbers on the master and slave surfaces.
Likewise for the Surface entity inside $Periodic I have for example
2 8 1 // 2 indicating it is a surface, Not clear what 8 and 1 are
Affine 1 0 0 5 0 1 0 0 0 0 1 0 0 0 0 1
3511 // Number of matched nodes between master and slave surfaces
xx xx
Hope this clarifies my question better.
Thanks again for the help
On 27/04/2017 7:20 AM, DILASSER Guillaume wrote:
Hi,
Have you looked at the documentation here
<http://gmsh.info/doc/texinfo/gmsh.html#MSH-ASCII-file-format> ? It says :
/$Periodic/
/number-of-periodic-entities/
/dimension slave-entity-tag master-entity-tag/
/number-of-nodes/
/slave-node-number master-node-number/
/…/
/$EndPeriodic/
It looks like your information.
Faithfully Yours,
Guillaume DILASSER
Doctorant SACM / LEAS
CEA - Centre de Saclay - Bât.123 - PC 319c
91191 Gif sur Yvette Cedex - France -
[email protected] <mailto:[email protected]>
*De :*gmsh [mailto:[email protected]] *De la
part de* Ranga Sudarsan
*Envoyé :* jeudi 27 avril 2017 12:56
*À :* gmsh mailing list <[email protected]>
*Objet :* [Gmsh] Help understanding MSH file entries while using
"Periodic surface with translate "
Hi there,
I am meshing a geometry with periodic (translated meshes) boundary
conditions along one of the directions (X in my case). I am using
periodic surface with translate to setup the translated periodic
meshes. I need help understanding some entries in the Msh file
generated specifically the section under "$Periodic" (See attached
image, in my case surfaces 1 and 8 are periodic). I understand that in
my case their are totally 11 periodic entities -- 5 points , 5 lines
and 1 surface and my trouble is in understanding the format of the
output corresponding to each of these periodic entities. It will be of
great help if some one explain to me what is the format for each of
these entities so that I can write a code to read the msh file and
generate relevant input files for my finite element solver. I have
attached the geo and mesh file.
Thanks again
Ranga Sudarsan
_______________________________________________
gmsh mailing list
[email protected]
http://onelab.info/mailman/listinfo/gmsh
