Hi GiD team,
I created a .post.msh file and a .post.res file. With that I am able to
check my results in the post process format in GiD, even if the original
mesh was not generated in GiD. That's great.
But now I'm wondering if there is any way to change the type of elements
and remesh my geometry.
Thank you and best regards,
Julia
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[GiDlist] (no subject)
Moderator: GiD Team
[GiDlist] (no subject)
You must explain in more detail what do you want.
Do you have a geometric CAD model in preprocess?
Then you can generate the mesh you want, and with the kind of elements you want (of the ones supported by GiD off course)
Or do you only have a mesh that is evolving with your calculation?
(e.g. a deformed mesh) and do you want to re-mesh this deformed mesh without have a deformed CAD model.
There are different cases:
- Is it 2D or 3D?
- Is it necessary to re-mesh the boundary or its shape is good enough and only is required to re-mesh its interior?
- Which kind or elements?
…
Enrique
De: gidlist-bounces at listas.cimne.upc.edu [mailto:gidlist-bounces at listas.cimne.upc.edu] En nombre de Julia Camargo
Enviado el: lunes, 7 de julio de 2014 17:15
Para: gidlist at listas.cimne.upc.edu
Asunto: [GiDlist] (no subject)
Hi GiD team,
I created a .post.msh file and a .post.res file. With that I am able to check my results in the post process format in GiD, even if the original mesh was not generated in GiD. That's great.
But now I'm wondering if there is any way to change the type of elements and remesh my geometry.
Thank you and best regards,
Julia
-------------- next part --------------
An HTML attachment was scrubbed...
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Do you have a geometric CAD model in preprocess?
Then you can generate the mesh you want, and with the kind of elements you want (of the ones supported by GiD off course)
Or do you only have a mesh that is evolving with your calculation?
(e.g. a deformed mesh) and do you want to re-mesh this deformed mesh without have a deformed CAD model.
There are different cases:
- Is it 2D or 3D?
- Is it necessary to re-mesh the boundary or its shape is good enough and only is required to re-mesh its interior?
- Which kind or elements?
…
Enrique
De: gidlist-bounces at listas.cimne.upc.edu [mailto:gidlist-bounces at listas.cimne.upc.edu] En nombre de Julia Camargo
Enviado el: lunes, 7 de julio de 2014 17:15
Para: gidlist at listas.cimne.upc.edu
Asunto: [GiDlist] (no subject)
Hi GiD team,
I created a .post.msh file and a .post.res file. With that I am able to check my results in the post process format in GiD, even if the original mesh was not generated in GiD. That's great.
But now I'm wondering if there is any way to change the type of elements and remesh my geometry.
Thank you and best regards,
Julia
-------------- next part --------------
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-
Julia Camargo
[GiDlist] (no subject)
Hi Enrique,
I do not have a CAD model in preprocess. I just have created the .post.msh
file and the .post.res file. Because of this, I am only able to open in the
post process, opening the .post.res file. This mesh is not deformed.
Summarizing, all I have is the coordinates of the nodes, the element
connectivities and the pressure result at the nodes. My model is in 3D and
I wish to change the mesh from hexaedra elements to prism elements. I need
to re-mesh its boundaries and interior. I know it is a broad question and I
am not being able to expresse myself clearly. The problem is that I open
the results in the post process, but when I change to preprocess, the model
desapear (of course, I had only .post files!). So, how can I generate a
pre-process model in which I will be able to re-mesh the geometry as I want
if I have only nodes coordinates and element connectivities in a 3D model?
I hope you will understand me,
Best regards,
Julia
2014-07-07 17:03 GMT-03:00 Enrique Escolano escolano at cimne.upc.edu:
You must explain in more detail what do you want.
Do you have a geometric CAD model in preprocess?
Then you can generate the mesh you want, and with the kind of elements you
want (of the ones supported by GiD off course)
Or do you only have a mesh that is evolving with your calculation?
(e.g. a deformed mesh) and do you want to re-mesh this deformed mesh
without have a deformed CAD model.
There are different cases:
- Is it 2D or 3D?
- Is it necessary to re-mesh the boundary or its shape is good
enough and only is required to re-mesh its interior?
- Which kind or elements?
…
Enrique
*De:* gidlist-bounces at listas.cimne.upc.edu [mailto:
gidlist-bounces at listas.cimne.upc.edu] *En nombre de *Julia Camargo
*Enviado el:* lunes, 7 de julio de 2014 17:15
*Para:* gidlist at listas.cimne.upc.edu
*Asunto:* [GiDlist] (no subject)
Hi GiD team,
I created a .post.msh file and a .post.res file. With that I am able to
check my results in the post process format in GiD, even if the original
mesh was not generated in GiD. That's great.
But now I'm wondering if there is any way to change the type of elements
and remesh my geometry.
Thank you and best regards,
Julia
_______________________________________________
GiDlist mailing list
GiDlist at listas.cimne.upc.edu
http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist
-------------- next part --------------
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I do not have a CAD model in preprocess. I just have created the .post.msh
file and the .post.res file. Because of this, I am only able to open in the
post process, opening the .post.res file. This mesh is not deformed.
Summarizing, all I have is the coordinates of the nodes, the element
connectivities and the pressure result at the nodes. My model is in 3D and
I wish to change the mesh from hexaedra elements to prism elements. I need
to re-mesh its boundaries and interior. I know it is a broad question and I
am not being able to expresse myself clearly. The problem is that I open
the results in the post process, but when I change to preprocess, the model
desapear (of course, I had only .post files!). So, how can I generate a
pre-process model in which I will be able to re-mesh the geometry as I want
if I have only nodes coordinates and element connectivities in a 3D model?
I hope you will understand me,
Best regards,
Julia
2014-07-07 17:03 GMT-03:00 Enrique Escolano escolano at cimne.upc.edu:
You must explain in more detail what do you want.
Do you have a geometric CAD model in preprocess?
Then you can generate the mesh you want, and with the kind of elements you
want (of the ones supported by GiD off course)
Or do you only have a mesh that is evolving with your calculation?
(e.g. a deformed mesh) and do you want to re-mesh this deformed mesh
without have a deformed CAD model.
There are different cases:
- Is it 2D or 3D?
- Is it necessary to re-mesh the boundary or its shape is good
enough and only is required to re-mesh its interior?
- Which kind or elements?
…
Enrique
*De:* gidlist-bounces at listas.cimne.upc.edu [mailto:
gidlist-bounces at listas.cimne.upc.edu] *En nombre de *Julia Camargo
*Enviado el:* lunes, 7 de julio de 2014 17:15
*Para:* gidlist at listas.cimne.upc.edu
*Asunto:* [GiDlist] (no subject)
Hi GiD team,
I created a .post.msh file and a .post.res file. With that I am able to
check my results in the post process format in GiD, even if the original
mesh was not generated in GiD. That's great.
But now I'm wondering if there is any way to change the type of elements
and remesh my geometry.
Thank you and best regards,
Julia
_______________________________________________
GiDlist mailing list
GiDlist at listas.cimne.upc.edu
http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist
-------------- next part --------------
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[GiDlist] (no subject)
You can read the .post.msh file if it is ASCII also in GiD preprocess, with Files-Import-GiD mesh…
And in preprocess you can do some mesh manipulations, but probably not enough to re-mesh as you want.
For example you can split the hexahedra into tetrahedra, but not into prisms (Mesh-Edit mesh-Split elements-Hexahedra to tetrahedral)
You can also extract from the hexahedra the skin mesh of quadrilaterals (Mesh-Create boundary mesh), then delete the hexahedra and split the quadrilaterals to triangles.
Then can export this triangles to a STL file (Files-Export-Using template .bas-STL) or as DXF and try to use this STL as initial model to be meshed (but really is a mesh, not a geometric CAD model and could be difficult to be remeshed).
If the boundary triangles are good they could be directly used to generate its interior volumic mesh, but GiD meshers could only generate unstructured tetrahedra.
If the mesh is very simple, maybe you can use Geometry-Create-Geometry from mesh.
This tool try to rebuilt NURBS surfaces from a surface mesh (like the inverse of a mesh generation from the CAD), but only works well for simple cases.
Without have a look to your model I can’t said more, if do you want send me (directly to my e-mail) the .post.msh file and I will do some tests.
Regards
Enrique Escolano
De: gidlist-bounces at listas.cimne.upc.edu [mailto:gidlist-bounces at listas.cimne.upc.edu] En nombre de Julia Camargo
Enviado el: miércoles, 9 de julio de 2014 20:48
Para: gidlist at listas.cimne.upc.edu
Asunto: Re: [GiDlist] (no subject)
Hi Enrique,
I do not have a CAD model in preprocess. I just have created the .post.msh file and the .post.res file. Because of this, I am only able to open in the post process, opening the .post.res file. This mesh is not deformed. Summarizing, all I have is the coordinates of the nodes, the element connectivities and the pressure result at the nodes. My model is in 3D and I wish to change the mesh from hexaedra elements to prism elements. I need to re-mesh its boundaries and interior. I know it is a broad question and I am not being able to expresse myself clearly. The problem is that I open the results in the post process, but when I change to preprocess, the model desapear (of course, I had only .post files!). So, how can I generate a pre-process model in which I will be able to re-mesh the geometry as I want if I have only nodes coordinates and element connectivities in a 3D model?
I hope you will understand me,
Best regards,
Julia
2014-07-07 17:03 GMT-03:00 Enrique Escolano escolano at cimne.upc.edu:
You must explain in more detail what do you want.
Do you have a geometric CAD model in preprocess?
Then you can generate the mesh you want, and with the kind of elements you want (of the ones supported by GiD off course)
Or do you only have a mesh that is evolving with your calculation?
(e.g. a deformed mesh) and do you want to re-mesh this deformed mesh without have a deformed CAD model.
There are different cases:
- Is it 2D or 3D?
- Is it necessary to re-mesh the boundary or its shape is good enough and only is required to re-mesh its interior?
- Which kind or elements?
…
Enrique
De: gidlist-bounces at listas.cimne.upc.edu [mailto:gidlist-bounces at listas.cimne.upc.edu] En nombre de Julia Camargo
Enviado el: lunes, 7 de julio de 2014 17:15
Para: gidlist at listas.cimne.upc.edu
Asunto: [GiDlist] (no subject)
Hi GiD team,
I created a .post.msh file and a .post.res file. With that I am able to check my results in the post process format in GiD, even if the original mesh was not generated in GiD. That's great.
But now I'm wondering if there is any way to change the type of elements and remesh my geometry.
Thank you and best regards,
Julia
_______________________________________________
GiDlist mailing list
GiDlist at listas.cimne.upc.edu
http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist
-------------- next part --------------
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And in preprocess you can do some mesh manipulations, but probably not enough to re-mesh as you want.
For example you can split the hexahedra into tetrahedra, but not into prisms (Mesh-Edit mesh-Split elements-Hexahedra to tetrahedral)
You can also extract from the hexahedra the skin mesh of quadrilaterals (Mesh-Create boundary mesh), then delete the hexahedra and split the quadrilaterals to triangles.
Then can export this triangles to a STL file (Files-Export-Using template .bas-STL) or as DXF and try to use this STL as initial model to be meshed (but really is a mesh, not a geometric CAD model and could be difficult to be remeshed).
If the boundary triangles are good they could be directly used to generate its interior volumic mesh, but GiD meshers could only generate unstructured tetrahedra.
If the mesh is very simple, maybe you can use Geometry-Create-Geometry from mesh.
This tool try to rebuilt NURBS surfaces from a surface mesh (like the inverse of a mesh generation from the CAD), but only works well for simple cases.
Without have a look to your model I can’t said more, if do you want send me (directly to my e-mail) the .post.msh file and I will do some tests.
Regards
Enrique Escolano
De: gidlist-bounces at listas.cimne.upc.edu [mailto:gidlist-bounces at listas.cimne.upc.edu] En nombre de Julia Camargo
Enviado el: miércoles, 9 de julio de 2014 20:48
Para: gidlist at listas.cimne.upc.edu
Asunto: Re: [GiDlist] (no subject)
Hi Enrique,
I do not have a CAD model in preprocess. I just have created the .post.msh file and the .post.res file. Because of this, I am only able to open in the post process, opening the .post.res file. This mesh is not deformed. Summarizing, all I have is the coordinates of the nodes, the element connectivities and the pressure result at the nodes. My model is in 3D and I wish to change the mesh from hexaedra elements to prism elements. I need to re-mesh its boundaries and interior. I know it is a broad question and I am not being able to expresse myself clearly. The problem is that I open the results in the post process, but when I change to preprocess, the model desapear (of course, I had only .post files!). So, how can I generate a pre-process model in which I will be able to re-mesh the geometry as I want if I have only nodes coordinates and element connectivities in a 3D model?
I hope you will understand me,
Best regards,
Julia
2014-07-07 17:03 GMT-03:00 Enrique Escolano escolano at cimne.upc.edu:
You must explain in more detail what do you want.
Do you have a geometric CAD model in preprocess?
Then you can generate the mesh you want, and with the kind of elements you want (of the ones supported by GiD off course)
Or do you only have a mesh that is evolving with your calculation?
(e.g. a deformed mesh) and do you want to re-mesh this deformed mesh without have a deformed CAD model.
There are different cases:
- Is it 2D or 3D?
- Is it necessary to re-mesh the boundary or its shape is good enough and only is required to re-mesh its interior?
- Which kind or elements?
…
Enrique
De: gidlist-bounces at listas.cimne.upc.edu [mailto:gidlist-bounces at listas.cimne.upc.edu] En nombre de Julia Camargo
Enviado el: lunes, 7 de julio de 2014 17:15
Para: gidlist at listas.cimne.upc.edu
Asunto: [GiDlist] (no subject)
Hi GiD team,
I created a .post.msh file and a .post.res file. With that I am able to check my results in the post process format in GiD, even if the original mesh was not generated in GiD. That's great.
But now I'm wondering if there is any way to change the type of elements and remesh my geometry.
Thank you and best regards,
Julia
_______________________________________________
GiDlist mailing list
GiDlist at listas.cimne.upc.edu
http://listas.cimne.upc.edu/cgi-bin/mailman/listinfo/gidlist
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