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June 8, 2010 12:24pm UTC

How to distinguish between inner and outer bounadry conditions.

Hello!

I have created a MATLAB script to set up 2D and 3D RF models.
To assign the correct boundary conditions I would need to be able to distinguish between inner and outer boundaries.

Is there any way to find out which index in fem.appl.bnd.ind corresponds to an inner and which to an outer boundary?

There should be a way, because Comsol in GUI mode is able to distinguish between the boundaries, however, I couldn't find a solution yet.

Thanks alot for your ideas!!!!!

Clemens

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August 24, 2010 7:38pm UTC in response to Christopher David

Re: How to distinguish between inner and outer bounadry conditions.

The way that I handled this in 3.5x was to get a list of boundaries for each subdomain in my geometry (using geomcsg).
To figure out which boundaries are "interior", simply compare the list of boundaries for one subdomain to the list of boundaries for all other subdomains. If the same boundary belongs to two or more subdomains, then it is "interior".

Dont ask me how to do this in 4.0... that's part of my current dilemma.

Mark Roy

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