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Slight change of current density despite of dramatically changing conductivity

Posted 12 mag 2016, 10:44 GMT-4 Low-Frequency Electromagnetics, Modeling Tools & Definitions, Parameters, Variables, & Functions Version 5.2 0 Replies

Shujun Xian
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Hello all,

I'm working on a 2D conductive network system in which the junction area has a much smaller conductivity (Sigma) value than the wires. However, when applied voltage, the current density only changes a little when changing the conductivity value in the junction. For example, the linear integrated current density is 8.4E4 when Sigma_junction = Sigma_wire/30; and it's 8.19E4 when Sigma_junction = Sigma_wire/1800. That seems quite illogical to me, because a large drop of current density is expected due to the dramatically increase of resistance.

Could anyone tell me what's wrong in the model or how to fix it?

Thank you in advance.

Shujun

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0 Replies Last Post 12 mag 2016, 10:44 GMT-4
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