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Thin electrically insulating layer in MF
Posted Aug 13, 2019, 1:57 a.m. EDT Low-Frequency Electromagnetics Version 5.2a 2 Replies
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Hello, I would like to model a setup for inductive physics with the mf module, which contains two conductive domains (with induced eddy currents) with a thin insulating layer between them. I do not want to model this thin layer due to the associated meshing difficulties. Is it possible to prescribe a boundary condition on their interface boundary, which (1) creates a discontinuity in the induced current, and (2) prescribes the condition that the induced currents have no normal components at this boundary (on both sides)? This question has already been asked, but I have found no working answer. A step-by-step example would be the best. Thank you Daniel
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Dear Barna,
I would recommend to use the Transition Boundary Condition. You can find details on this in the documentation and some info in the release highlights:
https://www.comsol.com/release/5.4/rf-module
BR, Árpád
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Barna, Arpad,
actually the transition BC is meant to represent a thin conductive layer in a model, not an insulating layer. Ignoring this, I tried to use it to model a crack in a metal for some eddy current testing appliances. It didn't work and also the advice from support was that I wouldn't get around physically introducing the crack. But this was a few years ago and things may have changed?
Cheers Edgar
-------------------Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com