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Joule Heating Problem

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Hello,

I've been doing some joule heating simulations and I noticed something interesting/troubling. The results I get from the Joule Heating module differ from those that I get from using the Electric Currents and Heat Transfer modules in parallel. I've noticed this with the complex part I am investigating as well as with a very simple rod. The Joule Heating module simulations give temperatures that are roughly double those from the Electric Currents/Heat Transfer simulations, and the Electric Currents/Heat Transfer simulations are giving the results that closer to what is expected. Can anyone explain why this is? I would like to be able to explain why I am going with one set of results over another with something other than "because it seems more correct."

I've only been able to test this on version 4.0a.

1 Reply Last Post 14.08.2011, 12:07 GMT-4
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)

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Posted: 1 decade ago 14.08.2011, 12:07 GMT-4
Hi

be aware that there were a few formula errors (i.e missing factorss of 2) in the early v4.0 version, my suggestion is to use the latest version/patch, far more stable and less frustrating ;)

--
Good luck
Ivar
Hi be aware that there were a few formula errors (i.e missing factorss of 2) in the early v4.0 version, my suggestion is to use the latest version/patch, far more stable and less frustrating ;) -- Good luck Ivar

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