I have a thin metal plate and a copper wire which has AC current flowing through it. The wire is represented as a long thin copper cylinder and placed on top of the plate. I used the magnetic current physics model and specified the current density within the cylinder (tried surface and external current density) to simulate the eddy currents. Used an analytical function for the AC current (mentioned frequency, phase, amplitude). I ran this simulation in the time domain and kept getting errors, which cut the simulation short.
I think the way I represented the current within the cylinder is wrong. Any idea how this should be done, for the simulation to run in the time domain in COMSOL?
Hi,
I hope we should understand Eddy Current better. Here is some information for Eddy Current in Cosmal. I hope it helps.
A time-varying current induces a time-varying magnetic field. The magnetic field induces currents in neighboring conductors. The induced currents are called eddy currents. In this model, the phenomenon is illustrated by a time-harmonic field simulation as well as a transient analysis, where the eddy currents resulting from the source being switched on are studied.
Two current-carrying coils are placed above a copper plate. They are surrounded by air, and there is a small air gap between the coils and the metal plate. The external source is applied as a current density, but the total current density in the coils is obtained only by taking the induced currents into account. The time-harmonic case will show the skin effect, that is, that the current density is high close to the surface and decreases rapidly inside the conductor.
Dear Siddharth Shankar
This document might be helpful, have a look:
https://www.comsol.com/forum/thread/attachment/122649/models.acdc.coil_above_plate-23973.pdf
Kind Regards
Qamar Ul Islam
Hello Siddharth Shankar ... Here is the site to download the consol models:https://www.comsol.com/model
for the CND here is the link: https://www.comsol.com/model/eddy-current-non-destructive-evaluation-18181
Best wishes
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