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Exact calculation of electrical current from current density
Posted May 10, 2019, 6:49 AM EDT Electrical, AC/DC & Electromagnetics Version 5.4 4 Replies
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I am using comsol to model a bipolar probe with three surfaces : Conductive surface forced to 0V, conductive surface forced to 10V and insulation surface beetween the two conductive surfaces. The probe is put on sea water.
So when i resolve my system I have streamlines between the two condictive surfaces.
Now, I want to calculate the current on each conductive surface from the current density integration. I use the following expression ( ec.Jxnx+ec.Jyny+ec.Jz*nz ).
I have a difference between the current IN and the current OUT about 1%. So I change the mesh to have a more accurate result but I realized that the current is totaly different comparing to the first mesh. So for one kind of mesh I have different current values.
Someone can help me if he have any idea.
Thank you very much