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Is this mesh transfer from one material to other okay for CFX?

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Old   January 3, 2018, 21:15
Default Is this mesh transfer from one material to other okay for CFX?
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Abid Khan
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Hello,

I've used ANSYS meshing module for making which was too be used CFX. I had understanding that there should be common nodes at the boundary of one material to the other through which load and results transfer within domains (as in the mesh in the circle "A" of figure). I've feeling that mesh in the rectangle "B" is not okay as many modes are in-attached with the other side.

If once such mesh, is it okay? And if not, how can I force "meshing" to make mesh as in circle "A" on the figure.
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Old   January 4, 2018, 00:32
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Glenn Horrocks
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CFX can use unmatched meshes using GGI interfaces. But it would be better to fix the mesh and make the mesh match. You can do this by defining them as multi body parts.
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Old   January 4, 2018, 04:10
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Quote:
Originally Posted by ghorrocks View Post
CFX can use unmatched meshes using GGI interfaces. But it would be better to fix the mesh and make the mesh match. You can do this by defining them as multi body parts.
These are defined as different domains and have different materials. How do I define them in meshing? Where can I find this option?
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Old   January 4, 2018, 04:38
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1) Your mesh is not conformal. Did you make the mesh in Spaceclaim? If so, thenyou need to specify in Spaceclaim that the volumes "share topology". Then reload the geometry in ANSYS Meshing and you will get rid of the mesh connections in ANSYS mesher, resulting in a conformal mesh.
2) If you want to have a finer mesh in B or in the thin volumes, then you have to create mesh refinements. Of use proximity, in which you specify that you want a minimum number of elements between 2 adjacent surfaces.
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Old   January 5, 2018, 21:07
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Quote:
Originally Posted by Gert-Jan View Post
1) Your mesh is not conformal. Did you make the mesh in Spaceclaim? If so, thenyou need to specify in Spaceclaim that the volumes "share topology". Then reload the geometry in ANSYS Meshing and you will get rid of the mesh connections in ANSYS mesher, resulting in a conformal mesh.
2) If you want to have a finer mesh in B or in the thin volumes, then you have to create mesh refinements. Of use proximity, in which you specify that you want a minimum number of elements between 2 adjacent surfaces.
Thanks for reply. I've followed the method 2 and mesh is okay now. There are common nodes between joining materials as in region "A" of the image.
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