Discussion Forum

Dear all,

I have a current-carrying conductor placed in a thin metallic enclosure (thickness is 1.5 mm). I have two models, first model with large domain and second model with reduced domain (please see the attached file). The problem I am having is that for the first model I have very high losses (mf.Qh or mf.Qrh) in the enclosure while almost negligible losses in the same domain for the second model. Ideally I was expecting equal losses from the models. The conductor losses are same for both cases.
The purpose of my simulations is to compute induced eddy current losses in the metallic enclosure which has relative permeability of unity, therefore, I expect the eddy current losses will be very low as in the second model. The conductor and enclosure are defined using Single Coil Domains. The current in the enclosure is set to zero.
However, I noticed that when I define additional Magnetic Insulation on outer boundaries of the enclosure in the first model I get similar results as in the second model. Can you please explain why is that happening? Also can you please suggest how to define thin metallic enclosure if Single Turn Coil Domain is not the right way of defining the thin metallic enclosure?
Thank you.

Regards,
Akim