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Electric conductivity

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My material has a electric conductivity model like this : d(cond)/dt= 1e-3*exp(ec.normE*1e-8). {Eq.1}
I tried to implement a analytical function on material: prev(cond,1)+1e-3*timestep*exp(ec.normE*1e-8);

But it did not work. How can I implement the Eq.1 in the Comsol?

0 Replies Last Post 16 set 2013, 13:59 GMT-4
COMSOL Moderator

Hello Daniela Suzuki

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