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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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Implimentation of equatuion

Posted Nov 8, 2012, 8:29 a.m. EST Modeling Tools & Definitions, Parameters, Variables, & Functions Version 4.3 5 Replies

Paul-Peter Golditz
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Hi,

I want to implement "my own" physics into Comsol or change a physic.

How can I do that?

Thanks!
5 Replies Last Post Nov 8, 2012, 11:03 a.m. EST
Jeff Hiller COMSOL Employee

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Posted: 1 decade ago Nov 8, 2012, 9:11 a.m. EST
Regarding solving your own PDEs/ODEs:

Chapter 15 in the User's Guide manual, version 4.3a, is a solid introduction to this topic. You will find tutorial examples, with step by step instructions, in the Model Library under COMSOL Multiphysics>Equation-Based Models.

Regarding solving your own PDEs/ODEs: Chapter 15 in the User's Guide manual, version 4.3a, is a solid introduction to this topic. You will find tutorial examples, with step by step instructions, in the Model Library under COMSOL Multiphysics>Equation-Based Models.
Pu
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Posted: 1 decade ago Nov 8, 2012, 9:14 a.m. EST
Hola,

Probably you need to implement your PDEs with PDE Interfaces.

If your physics is only different from those available application modes in several places, it's also possible for you to modify some expressions or equations in the available modes.

Cheers!
Hola, Probably you need to implement your PDEs with PDE Interfaces. If your physics is only different from those available application modes in several places, it's also possible for you to modify some expressions or equations in the available modes. Cheers!
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Nov 8, 2012, 9:27 a.m. EST
Hi

Check the model builder option (specially if you are in 4.3a), else use the PDE "physics/math" nodes

--
Good luck
Ivar
Hi Check the model builder option (specially if you are in 4.3a), else use the PDE "physics/math" nodes -- Good luck Ivar
Paul-Peter Golditz
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Posted: 1 decade ago Nov 8, 2012, 10:10 a.m. EST
Can I find the user's guide for Version 4.3 online?
Can I find the user's guide for Version 4.3 online?
Jeff Hiller COMSOL Employee

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Posted: 1 decade ago Nov 8, 2012, 11:03 a.m. EST
The documentation is copyrighted and therefore cannot be made available online.
You can find it inside the software under the Help menu.
The documentation is copyrighted and therefore cannot be made available online. You can find it inside the software under the Help menu.

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