Hello,
It is based in the nodes numbering in the moment of the mesh generation, so the user has no control on it.
ABEL
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Dr. Abel Coll Sans
CIMNE - International Center for Numerical Methods in Engineering
Ofice c-2, C1 building - Campus Nord UPC
Gran Capità s/n, 08034 Barcelona
T: 34 - 93 401 74 03 Fax: 34 - 93 40 65 17
De: gidlist-bounces at listas.cimne.upc.edu [mailto:gidlist-bounces at listas.cimne.upc.edu] En nombre de amit Dhankhar
Enviado el: viernes, 07 de noviembre de 2014 10:30
Para: gidlist at listas.cimne.upc.edu
Asunto: Re: [GiDlist] Specifying mesh orientation in GID
Thank you for the information. I wouldn’t need an extra node.
I was just wondering why GID prefers one diagonal over the other for some element and the other oriented diagonal for some other element, is this rule arbitrary or is there a
built in predictive algorithm?
Thanks!
On Nov 7, 2014 3:12 AM, “Enrique Escolano” escolano at cimne.upc.edu wrote:
It is not possible to control the ‘splitting diagonal’ of structured triangles or tetrahedral.
The only think that you can do is to set the flag ‘Symmetrical structured’ for Tetrahedra (in meshing preferences), then an extra node is create in the center of the ‘structured box’ and then the mesh become more symmetrical.
E.g. for example, in case of triangles without and with symmetrical flag:
De: gidlist-bounces at listas.cimne.upc.edu [mailto:gidlist-bounces at listas.cimne.upc.edu] En nombre de amit Dhankhar
Enviado el: viernes, 7 de noviembre de 2014 9:01
Para: gidlist at listas.cimne.upc.edu
Asunto: [GiDlist] Specifying mesh orientation in GID
Hi,
Do we have a control over the orientation of tetrahedral mesh elements created by GID. As I see, GID creates a specific orientation of the tetrahedral elements by default. ( Referring to structured mesh only)
For example, GID creates the following mesh when I mesh it with tetrahedral elements.
Inline image 1
As we can see, the orientation of elements changes around the mid-plane of the geometry. Is there a way to change this orientation and have a more consistent one like in the figure below-
Inline image 2
There is one other ‘setting’ under preferences of structured mesher in GID which doesn’t help either.
Thanks!
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