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DC Simulation with Conductivity as a function of T and E
Posted Aug 16, 2016, 7:36 a.m. EDT 1 Reply
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Hi all,
I am trying to make a DC Cable simulation on comsol by assigning a electrical conductivity to the insulation that depends both on the electric field and the temperature.
-I have made the model for Joule heating and coupled the electric currents and the heat transfer by the multiphysics.
-I also made a special analytic function for the electrical conductivity of the insulation. But I feel that the variables E and T have to be sourced from the results itself (piecewise). So in order to do that I used"comp1.T" and "comp1.ec.normE" in place of T and E.
I have attached my model for reference.
-However comsol gives me an error saying "Failed to evaluate variable.- Variable: comp1.T"
I dont understand where I am going wrong. Please help me if you know how to work this out! Thank you
I am trying to make a DC Cable simulation on comsol by assigning a electrical conductivity to the insulation that depends both on the electric field and the temperature.
-I have made the model for Joule heating and coupled the electric currents and the heat transfer by the multiphysics.
-I also made a special analytic function for the electrical conductivity of the insulation. But I feel that the variables E and T have to be sourced from the results itself (piecewise). So in order to do that I used"comp1.T" and "comp1.ec.normE" in place of T and E.
I have attached my model for reference.
-However comsol gives me an error saying "Failed to evaluate variable.- Variable: comp1.T"
I dont understand where I am going wrong. Please help me if you know how to work this out! Thank you
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1 Reply Last Post Aug 17, 2016, 10:42 a.m. EDT
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Posted:
8 years ago
Dear Saliha,
I suggest you address your post directly to: support@comsol.com
Best,
François Mandias
I suggest you address your post directly to: support@comsol.com
Best,
François Mandias