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How can I define nonlinear electric conductivity ?

Posted Jan 20, 2013, 11:08 a.m. EST Low-Frequency Electromagnetics, Materials Version 4.3 2 Replies

Murugan Natarajan
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Hi,

I'm currently working on electrical simulation using AC/DC module. How can I define nonlinear electric conductivity of zinc oxide (ZnO) in subdomain settings?
2 Replies Last Post Jan 20, 2013, 10:41 p.m. EST
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Jan 20, 2013, 1:29 p.m. EST
Hi

which kind of non linearity ? material properties depending on T, or V or I or B-H ? I would say, addthe corresponding a material property as an interpolated function, and be sure your variables are defined and solved for, then it should be "automatic"

--
Good luck
Ivar
Hi which kind of non linearity ? material properties depending on T, or V or I or B-H ? I would say, addthe corresponding a material property as an interpolated function, and be sure your variables are defined and solved for, then it should be "automatic" -- Good luck Ivar
Nagi Elabbasi Facebook Reality Labs
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Posted: 1 decade ago Jan 20, 2013, 10:41 p.m. EST
You can check out the Inductive Heating example in the COMSOL Model Gallery (Model ID 148: www.comsol.com/showroom/gallery/148/). It has a nonlinear electrical conductivity.
You can check out the Inductive Heating example in the COMSOL Model Gallery (Model ID 148: http://www.comsol.com/showroom/gallery/148/). It has a nonlinear electrical conductivity.

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