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modeling electric current

Posted Dec 17, 2012, 6:27 p.m. EST Low-Frequency Electromagnetics, Modeling Tools & Definitions, Parameters, Variables, & Functions Version 4.2a 1 Reply

Mohammad Bonakdar
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Hi
I need to obtain the electric current density field in a medium attributed to a pair of source and sink electrodes with known current. what physic should I choose and what boundary conditions should I determine?
Thank you
1 Reply Last Post Dec 18, 2012, 3:07 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 Dec 18, 2012, 3:07 a.m. EST
Hi

I would say EC (electric current) you solve for V and the current comes from the material conductivity.

as usual in COMSOL you need your geometry, your material properties, the EC physics, a GND and a terminal (if you have a voltage or current average value to define on a boundary, if you have already a voltage or current field, you need to use the Electric Potential or current source BC, and off you go ... ;)

--
Good luck
Ivar
Hi I would say EC (electric current) you solve for V and the current comes from the material conductivity. as usual in COMSOL you need your geometry, your material properties, the EC physics, a GND and a terminal (if you have a voltage or current average value to define on a boundary, if you have already a voltage or current field, you need to use the Electric Potential or current source BC, and off you go ... ;) -- Good luck Ivar

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