[Getdp] Has anybody a 3D magneto static or magneto dynamic example?

[Kubicek Bernhard]

Have you had a look at
http://www.geuz.org/getdp/wiki/TorusCurrent3D
, username getdp password wiki?
For your second question, it is possible.
We have a 3d field of conductivities, use current flow boundary conditions (one surface as current inflow, like in the thermal examples, another surface as potential zero).
>From the resulting current the magnetic field is calculated.
It is usefull to use a coupledt formulation for that.
i cannot send you the full example right now, because my linux is in a nonequilibrium state, and needs to thermalize..
nice greetings,
bernhard

-----Ursprüngliche Nachricht-----
Von: getdp-bounces at geuz.org [mailto:getdp-bounces at geuz.org] Im Auftrag von Egmont Schreiter
Gesendet: Freitag, 7. September 2007 14:09
An: getdp at geuz.org
Betreff: [Getdp] Has anybody a 3D magneto static or magneto dynamic example?


Dear users,

for doing only little steps I tried to expand the core.geo example to 
3D. Doing so with geometric is not the problem. The last days I also 
start to read the first chapters of the referenced book "computational 
electromagnetism" (http://www.em.tut.fi/~bossavit/), it was somewhere in 
the list, wiki or homepage recommended/referenced.

Now I struggle with 3D formulation of a magneto static problem. Has 
anyone a example in 3D? I think it would be helpful to have an extended 
core.geo in 3d in the wiki.

I attach my core_3d.geo with a definition.pro file and a function.geo 
file with a defined function to rotate. meshing works, but i know there 
are some missing physical in the file.

One question is about the source of the field in 3D: could one define j 
(current density) in just a cutting surface in the coil and  specify 
sigma the conductance, or should one define a vector field of current 
rotating in the coil? Are both sources possible?

Thank you
E. Schreiter

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