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mesh problem

Posted Feb 13, 2012, 10:19 p.m. EST Mesh, Modeling Tools & Definitions, Parameters, Variables, & Functions, Results & Visualization, Studies & Solvers Version 4.2a 2 Replies

Abbie
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Hi, I would like to get help on this problem:

I model an axisymmetric cylinder which should expand its volume in r-direction. By using moving mesh physics>free deformation, a prescribed mesh velocity was applied at the selected boundaries.

In the result, the boundary lines (in spatial frames) did expand as what i want, however it was found that the mesh does not expanding together (as shown in the attached mesh.png).

Can anyone please tell me why the mesh did not expand? How can i make the mesh to expand together with the boundary lines (in spatial frames)?


Thank you so much for your kindness.

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2 Replies Last Post Feb 14, 2012, 4:10 a.m. EST
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Feb 14, 2012, 2:00 a.m. EST
Hi

that can come from a few issues, most probably the mesh is displayed in the material frame in the plot.

To be sure check the numerical values of a point via the different variables x, X, Xm Xg whatever you have (i.e. use a coordinate frame to list the frames variable names in 2D-axi it's probably r R Rm Rg

--
Good luck
Ivar
Hi that can come from a few issues, most probably the mesh is displayed in the material frame in the plot. To be sure check the numerical values of a point via the different variables x, X, Xm Xg whatever you have (i.e. use a coordinate frame to list the frames variable names in 2D-axi it's probably r R Rm Rg -- Good luck Ivar
Abbie
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Posted: 1 decade ago Feb 14, 2012, 4:10 a.m. EST
Hi Ivar,

Yes, you are absolutely right. I just realised that I should adjust the frame setting (from material to spatial frame). It works well now.

Thanks a lot for your help! :)
Hi Ivar, Yes, you are absolutely right. I just realised that I should adjust the frame setting (from material to spatial frame). It works well now. Thanks a lot for your help! :)

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