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EC and MF coupling

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Dear Community,

could pls somebody tell me how it is possible to couple the electric current interface with the magnetic field interface.

I tried it at a simple 3d model, made out of two aluminum tubes. At first I applied an normal current density Jn, like sin(2*pi*50[Hz]*t) at the wires, as boundary condition from the ec interface and added one ground terminal at the other ends of both wires.

After that I would like to use the variable "ec.Jn" as start-variable for the magnetic field interface. I used it at entry for the external current density domain condition ( it does not feel good in my mind, because I use a boundary condition as prestep for a domain condition - but there is no better variable, which would be nice to share with the magnetic field interface)..

At the end it doesn't work.

Could pls somebody give me a hint, how to couple the ec and mf interface effectively??
At the end I would like to calculate the Lorentz force, that's why I need the mf interface, as TIME DEPENDENT STUDY.

Or somebody could tell me how to couple the model starting at 7:40min www.youtube.com/watch?v=_QqX7oMAH2o

Many thanks in Advance..

Sven

1 Reply Last Post 2016年9月12日 GMT-4 22:42
COMSOL Moderator

Hello Sven Görnhardt

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Posted: 8 years ago 2016年9月12日 GMT-4 22:42
about this video about undersea cable, do you get any idea or help? please tell me some information about how to build the cable model. Thanks very much!
about this video about undersea cable, do you get any idea or help? please tell me some information about how to build the cable model. Thanks very much!

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