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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 The information provided may be out of date.

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converting COMSOL code to the MATLAB ???

Posted 2012年4月26日 GMT-4 09:21 Interfacing, Heat Transfer & Phase Change, Computational Fluid Dynamics (CFD), Geometry, Installation & License Management, Materials, Parameters, Variables, & Functions, Structural Mechanics Version 4.0a 5 Replies

Mariem Nefzi
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Hello,

I'm working with COMSOL to simulate a chemical experience, but it takes too much time to display the results.
So i want to find a link between comsol and matlab if i can convert the code of comsol to matlab that will be faster than using comsol alone !!!
So am asking if i can do this and how ????


watting your answer
thank you very much :)
5 Replies Last Post 2012年6月1日 GMT-4 10:20
Mohammad Goharkhah
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Posted: 1 decade ago 2012年4月26日 GMT-4 09:31
Hi
you can simply save your comsol model as a MATLAB m.file

In the comsol file menu/ save As model mfile
Hi you can simply save your comsol model as a MATLAB m.file In the comsol file menu/ save As model mfile
Mariem Nefzi
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Posted: 1 decade ago 2012年4月26日 GMT-4 09:50
hi Mohammad ,

thank so much for your attention . i juste did what you say but when I execute the code in matlab, it doesn't work against in comsol it works very good !!
You can find out how I can solve this problem ?
thank's again
hi Mohammad , thank so much for your attention . i juste did what you say but when I execute the code in matlab, it doesn't work against in comsol it works very good !! You can find out how I can solve this problem ? thank's again
Mohammad Goharkhah
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Posted: 1 decade ago 2012年4月26日 GMT-4 10:00
Hi
Before executing the code in MATLAB, you should "run comsol with matlab"
go to the start menu/All programs/ comsol/ run comsol with matlab
then, you can run the mfile
Hi Before executing the code in MATLAB, you should "run comsol with matlab" go to the start menu/All programs/ comsol/ run comsol with matlab then, you can run the mfile
Francois Gregoire
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Posted: 1 decade ago 2012年4月27日 GMT-4 15:09
here are the steps:

Step in Comsol:
- save model as .m

Start 'Comsol with Matlab'

Steps in Matlab:
- open the .m
- put first and last lines of the code in comments:
% function out = model
...code...
% out = model;
- at the end of the code, insert lines to extract results, here is an example for heat transfer, see the docs for mpheval:
T = mpheval(model,'T') % temperature
kx = mpheval(model,'ht.kxx') % thermal conductivity in x
- Run your .m (F5) and see the extracted data in the matlab workspace
- The postprocessing world is yours!


here are the steps: Step in Comsol: - save model as .m Start 'Comsol with Matlab' Steps in Matlab: - open the .m - put first and last lines of the code in comments: % function out = model ...code... % out = model; - at the end of the code, insert lines to extract results, here is an example for heat transfer, see the docs for mpheval: T = mpheval(model,'T') % temperature kx = mpheval(model,'ht.kxx') % thermal conductivity in x - Run your .m (F5) and see the extracted data in the matlab workspace - The postprocessing world is yours!
Foad Samadi
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Posted: 1 decade ago 2012年6月1日 GMT-4 10:20
Thanks.Good Hints.
Thanks.Good Hints.

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