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Laplacian eigenvalues with Comsol

Posted Aug 23, 2010, 6:22 p.m. EDT 4 Replies

Brujita de Siete Suelas
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Hi,

I am a newbie to Comsol.
I was trying to get Laplacian eigenvalues in a 2D closed domain, with a Dirchlet null border condition.
The thing is, how can I do this and obtain actual eigenvalues instead of NaN values.
Thanks in advance for your help.
4 Replies Last Post Aug 31, 2010, 10:19 a.m. EDT
Brujita de Siete Suelas
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Posted: 1 decade ago Aug 30, 2010, 8:54 p.m. EDT
So?
Is there anyone there who could give me an advice, please?
Thanks in advance.
So? Is there anyone there who could give me an advice, please? Thanks in advance.
John Peterson
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Posted: 1 decade ago Aug 31, 2010, 9:10 a.m. EDT
Hola Bruja,
In 3.5a, under
Model Library -> Comsol Multiphysics -> Benchmarks -> Isospectral drum
you will find Poisson's eq. with Dirichlet boundary conditions. there is also a pdf and theory behind, you can modify the example at will.

john
Hola Bruja, In 3.5a, under Model Library -> Comsol Multiphysics -> Benchmarks -> Isospectral drum you will find Poisson's eq. with Dirichlet boundary conditions. there is also a pdf and theory behind, you can modify the example at will. john
Brujita de Siete Suelas
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Posted: 1 decade ago Aug 31, 2010, 10:15 a.m. EDT
Thanks for answering!
Where I can find COMSOL 3.5a documentation?
(I am working with COMSOL 4)
Thanks for answering! Where I can find COMSOL 3.5a documentation? (I am working with COMSOL 4)
Brujita de Siete Suelas
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Posted: 1 decade ago Aug 31, 2010, 10:19 a.m. EDT
Don't worry, found documentation.
I am trying this now
Thanks!!
Don't worry, found documentation. I am trying this now Thanks!!

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