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Nonlinear conductivity

Posted May 7, 2021, 1:53 p.m. EDT Electromagnetics Version 5.6 1 Reply

Xavier Granados ICMAB.CSIC/Applied Superconductivity, Electrical engineering applications
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Is it possible define lon linear conductivity (sigma(J)) in electrical current modulus? I tryed direct definition of sigma(J) but the program does not recognise J or Jc or Je or normJ neither Jx or Jy that actualy are recognised when solving a linear problem. I am trying to solve a 3D ec problem .

Thanks

1 Reply Last Post May 7, 2021, 3:56 p.m. EDT
Jeff Hiller COMSOL Employee

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Posted: 4 years ago May 7, 2021, 3:56 p.m. EDT
Updated: 4 years ago May 7, 2021, 4:08 p.m. EDT

Hello Xavier,

In the ec physics, COMSOL solves for V and defines J based on sigma and V. You would be creating a circular definition by defining sigma in terms of J. Instead, define sigma in terms of V and its derivatives.

Best,

Jeff

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Jeff Hiller
Hello Xavier, In the ec physics, COMSOL solves for V and defines J based on sigma and V. You would be creating a circular definition by defining sigma in terms of J. Instead, define sigma in terms of V and its derivatives. Best, Jeff

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