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Current density in soil

Posted May 16, 2017, 9:35 a.m. EDT Low-Frequency Electromagnetics 0 Replies

Antonin Bouchard
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Hi all,



I used the AC/DC module and electric current (ec) to model a semi-spherical soil with a current point source in the center upper surface.

I visualized the electrical potential created by this current injection in an homogeneous soil and the results were good.

Now I wanted to add a conducting cylinder (different resistivity from the surrounding soil) under the current point source and check the results. The potential (V) seems ok but the current density norm (ec.normJ) along the cylinder axis (see picture) is not perfectly symmetrical (despite the problem's symmetry) and rather "noisy" as you can see in picture 2.

I put the finest mesh I could have and made sure it was symmetrical to the plan cutting the cylinder in half along the radius.

If someone can tell me how to make the current density values cleaner I would appreciate!

Thanks
0 Replies Last Post May 16, 2017, 9:35 a.m. EDT
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Hello Antonin Bouchard

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