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weak formulation of the floating potential in AC/DC module

Posted Jul 9, 2015, 7:37 a.m. EDT Low-Frequency Electromagnetics 0 Replies

Lakshmi Selvakumaran
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Hi,

I am using the floating potential to represent the current injection through a highly conductive electrode. I notice that the boundary condition is an integral form, where the integration of the normal current density across this electrode is equated to the current applied. I also see that the voltage across the electrode is constant.

I would like to understand how, COMSOL implements this boundary condition. Specifically, I want to understand the weak formulation of this BC as I am cannot understand how the current density at each node is determined.

Thanks.

Best regards
Lakshmi.
0 Replies Last Post Jul 9, 2015, 7:37 a.m. EDT
COMSOL Moderator

Hello Lakshmi Selvakumaran

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