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Comsol variable questions

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Hi!

I have been using comsol for simulating a solenoid with a plunger with non-linear material. Now i would like to plot some position derivatives of variables, like d(mf.ICoil_Coil,p), where p is defined in a Global ODE. For some reason evaluates to 0 for all time. d(mf.ICoil_Coil,t) (time derivative) evaluates correctly however. What am i doing wrong? I can plot mf.ICoil_Coil as a function of p in results, so why cant i derivate it?

Thank you for your time,
Max

0 Replies Last Post 09.10.2016, 08:25 GMT-4
COMSOL Moderator

Hello Max Cedercreutz

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