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Mesh refinement in COMSOL 4.1
Posted 30.03.2011, 18:43 GMT-4 Mesh Version 3.5a, Version 4.1 2 Replies
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I got a problem when I tried to refine the mesh in COMSOL 4.1. I attached a very simple test here: 1D stead heat conduction problem.
I tried to specify the maximum mesh size for the entire domain. However, comsol gave me warning message and did not generate the mesh at all.
This could be easily done in comsol 3.5a using free mesh parameter. Does anyone know what the problem is? Thanks!
Hainan
I tried to specify the maximum mesh size for the entire domain. However, comsol gave me warning message and did not generate the mesh at all.
This could be easily done in comsol 3.5a using free mesh parameter. Does anyone know what the problem is? Thanks!
Hainan
Attachments:
2 Replies Last Post 31.03.2011, 15:52 GMT-4
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Posted:
1 decade ago
Hi,
In the model you have attached, there is no meshing node. Right-click the Mesh 1 node and select Edge; the Size node's settings then applies to the mesh that the Edge node creates.
The default in 4.1 is to use a physics-controlled mesh, for which you can control the element size from the "Element size" list in the Settings window for the main Mesh node.
If you add a Size node for a physics-controlled mesh, the mesh sequence type switches to a user-controlled mesh. You then have to add an Edge node for the actual meshing. If you instead directly switch to a user-controlled mesh in the main Mesh node, COMSOL Multiphysics automatically adds a Size node and a "mesher node" (an Edge node in 1D geometries).
Best regards,
Magnus Ringh, COMSOL
In the model you have attached, there is no meshing node. Right-click the Mesh 1 node and select Edge; the Size node's settings then applies to the mesh that the Edge node creates.
The default in 4.1 is to use a physics-controlled mesh, for which you can control the element size from the "Element size" list in the Settings window for the main Mesh node.
If you add a Size node for a physics-controlled mesh, the mesh sequence type switches to a user-controlled mesh. You then have to add an Edge node for the actual meshing. If you instead directly switch to a user-controlled mesh in the main Mesh node, COMSOL Multiphysics automatically adds a Size node and a "mesher node" (an Edge node in 1D geometries).
Best regards,
Magnus Ringh, COMSOL
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Posted:
1 decade ago
Hi Magnus,
Thanks a lot! I got it~
Hainan
Thanks a lot! I got it~
Hainan