[GiDlist] Fwd: Meshing curved volumes: Mesh conforms with th
Posted: Mon Dec 01, 2014 6:20 pm
Thank you for your help Enrique. I notice that when I'm meshing this
volume, mesh always aligns with the 'line' that was rotated to create the
volume. For example, this volume - (created by rotating the arc by 180 deg
twice)-
[image: Inline image 1][image: Inline image 2]
Here's the mesh for the same (default unstructured mesh)-
[image: Inline image 3]
The mesh 'aligns' with the line that separates the two curved surfaces. Is
there a way for the GID mesher to mesh more freely without any constraints?
Thanks!
Amit
On Mon, Nov 17, 2014 at 2:48 PM, Enrique Escolano escolano at cimne.upc.edu
wrote:
I rebuild your shape avoiding the parametrization problems of your model
and it could be meshed without problems.
You have created the extruded surface rotating a curve 180º that cross
the rotation axis,
I created the same shape, but dividing the curve and deleting half part,
and rotating 360º.
If fact it will be less problematic creating two surfaces not closed (with
a rotation of 180º and multiple copies=2 in the copy window)
And the lower plane will be less problematic creating a planar surface by
its boundary, avoiding the creation by rotation
(the poles of a surface of rotation are problematic, because this
degenerated points have zero derivative in one parametric direction)
Enrique
*De:* gidlist-bounces at listas.cimne.upc.edu [mailto:
gidlist-bounces at listas.cimne.upc.edu] *En nombre de *amit Dhankhar
*Enviado el:* lunes, 17 de noviembre de 2014 18:52
*Para:* gidlist at listas.cimne.upc.edu
*Asunto:* [GiDlist] Fwd: Meshing curved volumes
Hi Enrique,
Would you suggest trying out some other version for GID for the meshing
issue of the curved geometry I created?
Thanks!
On Thu, Nov 13, 2014 at 10:40 AM, amit Dhankhar amit12kd at gmail.com
wrote:
Hi,
I tried the repair geometry option which just says "everything was ok" but
fails to mesh. I created my volume by rotating a 2-d curved surface about
its own axis. (which retains the original 2-d surface and creates extra
points and lines which I have to collapse later)
I have attached a zip file containing the simple model -
"nov13_curvedvol_original.gid" - volume created by the rotation which GID
fails to mesh. Could you tell me what else could be wrong in this one? I am
running 12.1.1d version of GID.
In another attempt, "nov13_curvedvol_mod.gid" - I wanted to get rid of
extra surfaces, lines and points so I deleted the original 2-d surface and
the extra lines and tried reconstructing the volume which gives out an
error. This file just has the curved surface and it's base surface (which
ideally should represent a bounded domain)
Thanks
On Mon, Nov 10, 2014 at 12:26 PM, Enrique Escolano escolano at cimne.upc.edu
wrote:
Try to fix some geometrical problem with Utilities-Repair
Try to set all default meshing option. In utilities preferences meshing
press the Reset button
If it continue without mesh trying a reasonable mesh size then attach a
zip with your model to have a look
Enrique
*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 20:32
*Para:* gidlist at listas.cimne.upc.edu
*Asunto:* [GiDlist] Meshing curved volumes
Hi,
I am trying to mesh a simple geometry of the form of a spherical cap (
created by rotating an arc about its axis) but GID shows up some meshing
error. Creating spherical caps from boolean operations don't work either.
Here's how my geometry looks like-
[image: Inline image 1]
It was created by rotating this surface around it own axis (bounded by an
arc and a line)-
[image: Inline image 2]
As we can see, it shows up error saying 'two faces intersect'. Is there
any other way to mesh such volumes?
Thanks,
Amit
_______________________________________________
GiDlist mailing list
GiDlist at listas.cimne.upc.edu
http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist
_______________________________________________
GiDlist mailing list
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http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist
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volume, mesh always aligns with the 'line' that was rotated to create the
volume. For example, this volume - (created by rotating the arc by 180 deg
twice)-
[image: Inline image 1][image: Inline image 2]
Here's the mesh for the same (default unstructured mesh)-
[image: Inline image 3]
The mesh 'aligns' with the line that separates the two curved surfaces. Is
there a way for the GID mesher to mesh more freely without any constraints?
Thanks!
Amit
On Mon, Nov 17, 2014 at 2:48 PM, Enrique Escolano escolano at cimne.upc.edu
wrote:
I rebuild your shape avoiding the parametrization problems of your model
and it could be meshed without problems.
You have created the extruded surface rotating a curve 180º that cross
the rotation axis,
I created the same shape, but dividing the curve and deleting half part,
and rotating 360º.
If fact it will be less problematic creating two surfaces not closed (with
a rotation of 180º and multiple copies=2 in the copy window)
And the lower plane will be less problematic creating a planar surface by
its boundary, avoiding the creation by rotation
(the poles of a surface of rotation are problematic, because this
degenerated points have zero derivative in one parametric direction)
Enrique
*De:* gidlist-bounces at listas.cimne.upc.edu [mailto:
gidlist-bounces at listas.cimne.upc.edu] *En nombre de *amit Dhankhar
*Enviado el:* lunes, 17 de noviembre de 2014 18:52
*Para:* gidlist at listas.cimne.upc.edu
*Asunto:* [GiDlist] Fwd: Meshing curved volumes
Hi Enrique,
Would you suggest trying out some other version for GID for the meshing
issue of the curved geometry I created?
Thanks!
On Thu, Nov 13, 2014 at 10:40 AM, amit Dhankhar amit12kd at gmail.com
wrote:
Hi,
I tried the repair geometry option which just says "everything was ok" but
fails to mesh. I created my volume by rotating a 2-d curved surface about
its own axis. (which retains the original 2-d surface and creates extra
points and lines which I have to collapse later)
I have attached a zip file containing the simple model -
"nov13_curvedvol_original.gid" - volume created by the rotation which GID
fails to mesh. Could you tell me what else could be wrong in this one? I am
running 12.1.1d version of GID.
In another attempt, "nov13_curvedvol_mod.gid" - I wanted to get rid of
extra surfaces, lines and points so I deleted the original 2-d surface and
the extra lines and tried reconstructing the volume which gives out an
error. This file just has the curved surface and it's base surface (which
ideally should represent a bounded domain)
Thanks
On Mon, Nov 10, 2014 at 12:26 PM, Enrique Escolano escolano at cimne.upc.edu
wrote:
Try to fix some geometrical problem with Utilities-Repair
Try to set all default meshing option. In utilities preferences meshing
press the Reset button
If it continue without mesh trying a reasonable mesh size then attach a
zip with your model to have a look
Enrique
*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 20:32
*Para:* gidlist at listas.cimne.upc.edu
*Asunto:* [GiDlist] Meshing curved volumes
Hi,
I am trying to mesh a simple geometry of the form of a spherical cap (
created by rotating an arc about its axis) but GID shows up some meshing
error. Creating spherical caps from boolean operations don't work either.
Here's how my geometry looks like-
[image: Inline image 1]
It was created by rotating this surface around it own axis (bounded by an
arc and a line)-
[image: Inline image 2]
As we can see, it shows up error saying 'two faces intersect'. Is there
any other way to mesh such volumes?
Thanks,
Amit
_______________________________________________
GiDlist mailing list
GiDlist at listas.cimne.upc.edu
http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist
_______________________________________________
GiDlist mailing list
GiDlist at listas.cimne.upc.edu
http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist
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