Menu

Discussion Forum

New Discussion
Filtra

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 The information provided may be out of date.

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Create a mesh with disproportionnal object

Posted 7 giu 2011, 10:31 GMT-4 Mesh Version 4.0a 3 Replies

Nicolas Dufour
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hello everybody,

I'm working on a micro-structure with these dimensions : 2000µm (x) / 2000µm (y) / 1µm (z) and the problem is that I don't know how to create a good mesh to have a good volume resolution without 1 million elements

Thanks
3 Replies Last Post 7 giu 2011, 11:23 GMT-4
Jeff Hiller COMSOL Employee

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 7 giu 2011, 11:01 GMT-4
Have you tried sweep meshing? See User's Guide, Chapter 17.
Have you tried sweep meshing? See User's Guide, Chapter 17.
Nicolas Dufour
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 7 giu 2011, 11:13 GMT-4
Yes I have tried a swept mesh, in all directions, and I'm always around zero in quality
Yes I have tried a swept mesh, in all directions, and I'm always around zero in quality
Jeff Hiller COMSOL Employee

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 7 giu 2011, 11:23 GMT-4
Given how the quality factor is defined, i.e. purely based on geometric considerations, that's expected and in fact it's the whole point of using a swept mesh here: you are trying to create elements that are elongated in a manner similar to your geometry. The real question is whether the mesh is able to capture the physics. If it is, then the quality of the mesh can be low, especially if you use a direct solver (iterative solvers might complain about ill-conditioning - that depends on your physics of course).
Given how the quality factor is defined, i.e. purely based on geometric considerations, that's expected and in fact it's the whole point of using a swept mesh here: you are trying to create elements that are elongated in a manner similar to your geometry. The real question is whether the mesh is able to capture the physics. If it is, then the quality of the mesh can be low, especially if you use a direct solver (iterative solvers might complain about ill-conditioning - that depends on your physics of course).

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content