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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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extrude meshing?

Posted 2011年3月21日 GMT-4 10:19 Mesh Version 4.0 4 Replies

Lars R.
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Hi,

I'm new to COMSOL and have some problems with the meshing of my model in COMSOL 4.0. It is a simple cuboid wich is built out of 2 units. The smaller model is placed on top of the bigger. Now I want a user defined mesh for both together. I started building a mesh made of rectangles on the top surface using the "mapped" option. I used two distribution moduls to define the number of elements for each axis of the face. Till here I think I figured all out on my own. Now I want to extrude the mapped surface along the z axis. Up to a special value the distance between the layers of the mesh should be constant from. This value should be the starting point for the rest of the mesh. In this part of the mesh the distance between the layers should rise exponential.
The problem is I don't know how to extrude the mesh the way I want to because I can't find the option extrude mesh, which existed in COMSOL 3.5a. Can anyone help me?

Thanks

Lars
4 Replies Last Post 2011年3月22日 GMT-4 02:42
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 2011年3月21日 GMT-4 10:55
Hi

I believe you must use the sweep mesh in v4,
the extrusion and revolve "mesh" are not there (at least I have not found them back)
they exist as geometry operations though

--
Good luck
Ivar
Hi I believe you must use the sweep mesh in v4, the extrusion and revolve "mesh" are not there (at least I have not found them back) they exist as geometry operations though -- Good luck Ivar
Lars R.
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Posted: 1 decade ago 2011年3月21日 GMT-4 11:55
Thank you for your quick response.
I tried doing it with the swept option but I can't find anything where I can define my parameters for the meshing. I just got options for the number of elements. On this way COMSOL always meshes the whole model and I want to define two areas with different characteristics.
My second problem is that the mesh should cover both parts of my geometry at once. Now it covers both parts separately. That means when I want five elements, COMSOL puts five elements each on the both parts of the geometry.
Do you have any tips for me?

Thanks
Lars
Thank you for your quick response. I tried doing it with the swept option but I can't find anything where I can define my parameters for the meshing. I just got options for the number of elements. On this way COMSOL always meshes the whole model and I want to define two areas with different characteristics. My second problem is that the mesh should cover both parts of my geometry at once. Now it covers both parts separately. That means when I want five elements, COMSOL puts five elements each on the both parts of the geometry. Do you have any tips for me? Thanks Lars
Jim Freels mechanical side of nuclear engineering, multiphysics analysis, COMSOL specialist
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Posted: 1 decade ago 2011年3月21日 GMT-4 14:01
I think I read where the extrude mesh (which also creates a geometry) will be available in v4.2 (at least that is what is says in the v4.1 release notes). I look forward to a return of this feature as well !
I think I read where the extrude mesh (which also creates a geometry) will be available in v4.2 (at least that is what is says in the v4.1 release notes). I look forward to a return of this feature as well !
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 2011年3月22日 GMT-4 02:42
Hi

with the seep mesh you must add a (or several) sub-node(s) if you want to change the distribution and number of sub-elements

I believe we are all looking forward for 4.2, and getting impatient ;)

--
Good luck
Ivar
Hi with the seep mesh you must add a (or several) sub-node(s) if you want to change the distribution and number of sub-elements I believe we are all looking forward for 4.2, and getting impatient ;) -- Good luck Ivar

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