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Field behind metal shield
Posted 12 Oct 2012 05:42 GMT-04:00 AC/DC & Electromagnetics Version 4.3a 1 Reply
I want to model the following simple case.
Within vacuum, a 2D body carries a surface charge. Next to it is a metal body. I want to obtain the quality of the field direction behind the metal. From theory we know that the metal is not polarizable, i.e. when subject to a field, the charge within separates in order to build up an opposing field within the metal that completely cancels the net field within the metal. The separated charge then produces a field of its own on the opposite side and so the field exits on the opposite side. I tried to model this and show it in this figure:
My question is:
How do I define the right square to be a metal, i.e. such that the field lines terminate ON the metal on the close side and not "go around it" and then exit on the far side again?
Currently, due to a lack of knowing how to define the metal, I subtract the right rectangle from the vacuum box, but that's not giving the right solution.
Thanks for help.