Altair RISE

A program to recognize and reward our most engaged community members

Nominate Yourself Now!

FEM mesh size when a finite conductivity is introduced

Hello everyone,

I have a small doubt regarding the mesh size of the FEM solver when the material inside a 3D body (for RCS consideration) is characterized with some finite conductivity. I can see the standard mesh default for FEM is around `\lambda/10` but with a conductivity of 10 inside a material (`\epislon_r = 1`), the mesh size for standard meshing is around `\lambda/145`. Does it change when the skin depth changes? I have attached my cfx here.

Unable to find an attachment - read this blog

Find more posts tagged with

English

Feko

Accepted answers

All comments

Mel

Feko will mesh the FEM tets according to the wavelength inside the medium, so definitely defining a conductivity will reduce the mesh size.

lostarmour

Feko will mesh the FEM tets according to the wavelength inside the medium, so definitely defining a conductivity will reduce the mesh size.

Thanks for the insight.

Does it have a rule for the standard mesh? Like how much it is going to reduce based on wavelength inside the medium and conductivity?

Mel

Yes, see 'Automatic Meshing for Regions' in the Altair_Feko_User_Guide.pdf