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joule heating 2d - with current out of plane

Posted 2012年8月7日 GMT-4 06:46 Heat Transfer & Phase Change Version 4.2a 2 Replies

Florian Steiner
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I'm trying to simulate some temperature distribution that is established by an electrical current - joule heating.

The structure is supposed to be infinitely extended, so I'm using 2d geometry (see attached pdf).
Now, what is a bit different from the standard use of 'joule heating' is that the current is perpendicular to the 2d plane.
A module that is capable of defining these kind of currents is 'magnetic fields'.
The Problem now is, that for some reason the two modules don't work together (see attached comsol-file)!?
I think they supposed to. Is there something specific that I have to do that they do??

thanks in advance for every hint. f
2 Replies Last Post 2012年10月9日 GMT-4 04:32
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 2012年8月13日 GMT-4 01:55
Hi

I do not see why the two "should work together", by that I means what's coupling them ?.
They will solve independently, but for that you need to define the JH physics correctly, and you are right you cannot select a Jz, normal current density. Exactly Why, is either in the doc, or "support" can give you the full argumentation. Probably it is related that it should assume that the all depth effect are homogeneous, so it would basically only allow for scalar values. V does not seem to be solved along Z, probably as it implies to restrictive assumptions, but it would require more thinking to find out exactly why

If you get a reply from "support", then report it back here it's an interesting issue, it applies also to 4.3

--
Good luck
Ivar
Hi I do not see why the two "should work together", by that I means what's coupling them ?. They will solve independently, but for that you need to define the JH physics correctly, and you are right you cannot select a Jz, normal current density. Exactly Why, is either in the doc, or "support" can give you the full argumentation. Probably it is related that it should assume that the all depth effect are homogeneous, so it would basically only allow for scalar values. V does not seem to be solved along Z, probably as it implies to restrictive assumptions, but it would require more thinking to find out exactly why If you get a reply from "support", then report it back here it's an interesting issue, it applies also to 4.3 -- Good luck Ivar
Florian Steiner
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Posted: 1 decade ago 2012年10月9日 GMT-4 04:32
sorry ... i replied to wrong thread.
sorry ... i replied to wrong thread.

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