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## Accessing Fem Structure within COMSOL & Coupling Variables

Posted 2009年8月12日 GMT-4 15:09 1 Reply

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Hi everyone,

I am looking for a way to access the fem structure within comsol for a given geometry.

I would ideally like a way to evaluate the postinterp(fem,[x;y;z]) function as an expression while remaining in COMSOL (that is without exporting the fem strcture to MATLAB and then trying to evaluate it there).

The idea is that I have one geometry which I have solved and wish to evaluate specific points within the subdomains to be used in a second geometry in the same mph file. The coupling variables approach doesn't seem to be what I need, unless it has some hidden implementation that I am just not seeing. I would like point evaluation and not an integral over the entire domain. Really I am looking for a command that replicates the functionality of the 'Data Display>Subdomain' dialog that can be used as an expression.

Thanks again,

Jon

I am looking for a way to access the fem structure within comsol for a given geometry.

I would ideally like a way to evaluate the postinterp(fem,[x;y;z]) function as an expression while remaining in COMSOL (that is without exporting the fem strcture to MATLAB and then trying to evaluate it there).

The idea is that I have one geometry which I have solved and wish to evaluate specific points within the subdomains to be used in a second geometry in the same mph file. The coupling variables approach doesn't seem to be what I need, unless it has some hidden implementation that I am just not seeing. I would like point evaluation and not an integral over the entire domain. Really I am looking for a command that replicates the functionality of the 'Data Display>Subdomain' dialog that can be used as an expression.

Thanks again,

Jon

1 Reply Last Post 2009年8月12日 GMT-4 16:09