Re: [SI-LIST] : question electrostatic solvers

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From: Doug McKean ([email protected])
Date: Tue Aug 29 2000 - 09:02:39 PDT

Jan Vercammen wrote:
> hello si-list,
> I have a question concerning method of moments electrostatic solvers.
> Some (I think most) general-purpose electrostatic solvers replace the
> dielectric-dielectric interfaces with an unknown surface charge. So these solvers
> atack a free-space problem.
> My question is: on what is this based? Why is one allowed to remove the dielectra
> and replace them by a surface charge?

Electrostatics? I once wanted to see what would happen
by charging the top plate of box with a certain charge.
I just did a reduced type of Laplacian (the value of
a point in free space is the average of the values of
the points around it) and dropped it into an Excel
spreadsheet. I had to start with a particular value
on the top plate.

Not sure if this type of method is used on the simulators.

- Doug

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