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<lekernel>
what program can I use to compute the electric field generated by multiple electrodes with a given geometry and at given potentials?
<mumptai>
cst microwave studio?
<mumptai>
or is it just "an oddly shaped capacitor at DC"?
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<lekernel>
just static field
<lekernel>
DC
<mumptai>
that's way simpler, but right now i'm not a aware of a software for that (that won't also do the complex stuff and comes with that cost)
<mumptai>
what are you trying to solve?
<lekernel>
quickfield looks pretty good, if only it weren't windows and evaluation-type license
<lekernel>
a pretty simple problem in fact :) four electrodes arranged in a square
<lekernel>
with two potential differences for X and Y
<mumptai>
some years ago i had a 3d frequency domain solver, that should be able to do that
<lekernel>
the end purpose is to be able to generate an arbitrary and constant 2D electric field inside the square by varying those two potentials
<lekernel>
I want to simulate it to see how much the electrodes for one axis will mess up the others, and what I can do to prevent this (eg space the electrodes etc.)
<mumptai>
reduce the poles to infinitesimal small charges and calculate the superposition of the filed of all four at any place you are interested in
<mumptai>
and be a bit carefull that the reduction of the pole size stays valid
<lekernel>
how can an infinitesimal small charge generate a constant potential (inside the electrode)? this doesn't sound like a good model...
<mumptai>
it isn't
<mumptai>
its just simple
<lekernel>
too simple I think :)
<mumptai>
but it hold up as long as you are far away from it
<lekernel>
I'm not. the very purpose of this simulation is to see what happens close to the electrodes
<mumptai>
if the electrodes are big compared to their distance, it won't work too well
<mumptai>
okay, than you need to work with the integrals covering the electrodes surfaces