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Help - Model Electric field from square wave potential
Posted 19 mai 2014, 04:47 UTC−4 Electromagnetics, Low-Frequency Electromagnetics, Studies & Solvers 1 Reply
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Hi,
I would like to model an electric field between a live electrode and a ground electrode. The voltage to the live electrode is supplied as a square wave, and I am interested in the "time-average" shape of the electric field.
1. Which physics is appropriate to use here: Is it ok to model it with electrostatics and just assign a fixed potential to the live electrode?
Or will magnetic effects arise from the square wave voltage and will theses affect the "time-average" appearance of the electric field?
2. If es is not enough to model this, then what would be the best way to model it in COMSOL?
I would like to model an electric field between a live electrode and a ground electrode. The voltage to the live electrode is supplied as a square wave, and I am interested in the "time-average" shape of the electric field.
1. Which physics is appropriate to use here: Is it ok to model it with electrostatics and just assign a fixed potential to the live electrode?
Or will magnetic effects arise from the square wave voltage and will theses affect the "time-average" appearance of the electric field?
2. If es is not enough to model this, then what would be the best way to model it in COMSOL?
1 Reply Last Post 19 mai 2014, 06:10 UTC−4
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Posted:
1 decade ago
Staffan,
my first attempt would indeed by es. The time average could be calculated from the duty cycle of the square wave.
Only if you expect strong displacement currents you would need to change to mef.
Cheers
Edgar
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Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com