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[GAMBIT] Creating two different mesh types on a single face

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Old   June 17, 2011, 08:03
Default Creating two different mesh types on a single face
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Hi,

How can I create both tri & quad elements on a single face as shown
on the attached file ? Quad and tri elements are not separeted with a line.

Thank you in advance.
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Old   June 21, 2011, 01:54
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with a BL you can obtain someting like your pdf.
But you won't have quads pressing of opposite edges (left bottom corner on pdf).
Else without a split, I don't know how (and I wonder if it is possible)
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Old   June 21, 2011, 03:28
Default Boundary layer
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I tried to attach a BL, as shown in attached file, it didn't work. The Bl doesn't touch the vertices on the left side of the bottom.
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Old   June 21, 2011, 03:31
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Quote:
Originally Posted by -mAx- View Post
But you won't have quads pressing of opposite edges (left bottom corner on pdf).
Yes that is what I mentionned
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Old   June 21, 2011, 03:44
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Do you think I can do such a meshing with another tool? Any idea?
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Old   June 21, 2011, 03:51
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with gambit, you only need to split the surface and that's it!
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Old   June 21, 2011, 03:58
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Splitting like that creates a line which needs to be defined as an interface. This is not desired.
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Old   June 21, 2011, 04:06
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no
If your split is well done, your line will split the surface into 2 connected surfaces.
So interfaces aren't involved here
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Old   June 21, 2011, 07:40
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Please just have a look at the attached file.
It is created with a design modeler. It has a box and a triangler face.
There is no line between the faces.
It has no vertex on the line shown with a red arrow.
What a pity. I can't do it with a Gambit.
Any
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Old   June 21, 2011, 08:01
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I don't understand where is the problem, with the separated line.
Once again, if the 2 surfaces are connected, the line will be treated as element's edge. If you import your mesh if Fluent, you can display the mesh, and you won't see the line anymore:just like what you want.
But I give your right, if the 2 surfaces aren't connected, then, the line will be treated as wall, and then you need interface

Sans titre.png
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Old   January 16, 2013, 11:25
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Hi, I have the same problem.
How can I create both tri & quad elements on a single face?
Thank you very much
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Old   January 17, 2013, 02:25
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by splitting your surfaces into 2 surfaces. Then mesh first surface with quad and the other with tri
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Old   January 17, 2013, 16:50
Default merge 2D meshes, hybrid mesh quad tri
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Here is how you can do it in ICEM CFD:
  • Geometry: draw two adjacent surfaces and repair geometry...
  • Meshing: mesh one surface 'Quad Dominant' and the other surface 'All Tri'. See figures 1 and 2 for the settings. You should obtain a mesh similar to figure 3.
  • Merge the adjacent nodes: Edit Mesh => Merge Nodes => Merge Tolerance... enter a very small tolerance. See the settings on figure 4.
  • Repair the mesh: Edit mesh => Repair Mesh => Build Mesh Topology... see figure 5.
  • That's it. Now you can apply boundary conditions and export, etc. It will be a continuous hybrid mesh in Fluent, no interior wall.
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File Type: jpg 002.jpg (38.2 KB, 13 views)
File Type: jpg 003.jpg (46.0 KB, 12 views)
File Type: jpg 004.jpg (48.1 KB, 11 views)
File Type: jpg 005.jpg (52.2 KB, 10 views)
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