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2D, Magnetic and electric field module

Posted Dec 8, 2013, 12:17 p.m. EST Version 4.3 3 Replies

Jasha Poliakine
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Hi everyone,

I'm trying to model a very basic problem.
I have a conductive current carrying wire (an extremely thin wire actually) and I would like to obtain the spatial distribution of the magnetic field created by the current flow.

I'm using the "magnetic and electric fields module".

The first question is,:
Is there an easy way to define a thin wire in order to eliminate all the meshing/memory issues?

The second problem is that, in addition to the difficulties in meshing a thin geometry (I kinda solved it by using a "swept" mesh) , in 3D everything works fine: I set an electric potential across the wire and, and I get a current and magnetic field as a result. On the other hand, in 2D if I set the the electric potential on the bounds of the wire, I ONLY get the current as a result (the magnetic field is '0' everywhere, and so is the magnetic energy).

Any ideas on how to solve these two problems?

Thank you in advance!
3 Replies Last Post Mar 2, 2015, 10:50 a.m. EST
Jasha Poliakine
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Posted: 1 decade ago Dec 9, 2013, 2:11 a.m. EST
One more thing...

I think I can use an "edge current" over a line, since I'm not interested in solving for the current distribution INSIDE the wire.

Unfortunately the documentation is not really clear on how to define an edge current. Could someone explain that please?
One more thing... I think I can use an "edge current" over a line, since I'm not interested in solving for the current distribution INSIDE the wire. Unfortunately the documentation is not really clear on how to define an edge current. Could someone explain that please?
Roshini Manimaran
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Posted: 10 years ago Mar 2, 2015, 5:20 a.m. EST
hai jasha,

I am also facing the same problem as you. Did you got the answer for your question?
hai jasha, I am also facing the same problem as you. Did you got the answer for your question?
Edgar J. Kaiser Certified Consultant
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Posted: 10 years ago Mar 2, 2015, 10:50 a.m. EST
Hi Jasha,

edge current is available in the boundary conditions for edges (!). And then you need an edge. This can be an edge from some geometrical entity, including any lines. The edge has either to form a closed path or has to extend to outer model boundaries because current cannot appear and disappear inside the model.

Cheers
Edgar

--
Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
Hi Jasha, edge current is available in the boundary conditions for edges (!). And then you need an edge. This can be an edge from some geometrical entity, including any lines. The edge has either to form a closed path or has to extend to outer model boundaries because current cannot appear and disappear inside the model. Cheers Edgar -- Edgar J. Kaiser emPhys Physical Technology http://www.emphys.com

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