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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 The information provided may be out of date.

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Meshing problem

Posted 2014年1月11日 GMT-5 12:09 Mesh Version 3.5a 3 Replies

Primož Cuznar
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Hi everyone!

I am using Comsol 3.5a and cannot figure it out, how to mesh this attached model ... I tried everthing from free mesh predefined mesh sizes (all of them) to boundary layer mesh but I'm still getting errors during mesh. Would anyone be so kind to help me, please, I really need this.

Thanks!

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3 Replies Last Post 2014年1月14日 GMT-5 08:43
Lasse Murtomäki
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Posted: 1 decade ago 2014年1月14日 GMT-5 08:11
I opened your model in Comsol 4.3b. Your problem is the very thin (2e-5m) layer on the top of the block. The four cones in the center I meshed with tetrahedra of the minimum element size 1e-4, deleted the thin layer, and did the rest with free tetrahedra. No problem.

Hence, you need to deal with the very thin layer in another way, perhaps via the boundary condition - I do not know better as I do not remember any more how 3.5 works.
I opened your model in Comsol 4.3b. Your problem is the very thin (2e-5m) layer on the top of the block. The four cones in the center I meshed with tetrahedra of the minimum element size 1e-4, deleted the thin layer, and did the rest with free tetrahedra. No problem. Hence, you need to deal with the very thin layer in another way, perhaps via the boundary condition - I do not know better as I do not remember any more how 3.5 works.
Lasse Murtomäki
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Posted: 1 decade ago 2014年1月14日 GMT-5 08:23
Continues...

Set the resolution of narrow regions to 1e-5, for example. That makes the trick.

Lasse
Continues... Set the resolution of narrow regions to 1e-5, for example. That makes the trick. Lasse
Primož Cuznar
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Posted: 1 decade ago 2014年1月14日 GMT-5 08:43
Thanks for reply and helping me Lasse!
I will try to work this out ... on the other hand I am thinking that it would be great if I go to higher Comsol version. I think they are more user friendly and not so buggy :)

Thanks again!
Thanks for reply and helping me Lasse! I will try to work this out ... on the other hand I am thinking that it would be great if I go to higher Comsol version. I think they are more user friendly and not so buggy :) Thanks again!

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