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Subdomain integration in Comsol Script

Posted 26 giu 2009, 16:27 GMT-4 5 Replies

Juan Parra-Robles
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How do you do subdomain integration in comsol script. I just want to find integral of u over one subdomain.
5 Replies Last Post 1 lug 2009, 08:23 GMT-4
Yevgeniy Davletshin
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Posted: 2 decades ago 26 giu 2009, 16:47 GMT-4
Why don't you use GUI > Postprocessing > Subdomain Integration and input u as a parameter.
Why don't you use GUI > Postprocessing > Subdomain Integration and input u as a parameter.
Juan Parra-Robles
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Posted: 2 decades ago 26 giu 2009, 17:57 GMT-4

Why don't you use GUI > Postprocessing > Subdomain Integration and input u as a parameter.


Thanks, but can't use GUI because I need to repeat the calculation several times with different model parameters and integrate the solution u for each iteration and store it for further processing/analysis. That's why I need to use Comsol Script.
[QUOTE] Why don't you use GUI > Postprocessing > Subdomain Integration and input u as a parameter. [/QUOTE] Thanks, but can't use GUI because I need to repeat the calculation several times with different model parameters and integrate the solution u for each iteration and store it for further processing/analysis. That's why I need to use Comsol Script.
Yevgeniy Davletshin
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Posted: 2 decades ago 26 giu 2009, 22:00 GMT-4
Sorry may be I'm wrong,
but you can for example use parametric analysis, then plot your u (in subdomain integration) and then save data from plot.
Sorry may be I'm wrong, but you can for example use parametric analysis, then plot your u (in subdomain integration) and then save data from plot.
Nils-Erik Hörlin
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Posted: 2 decades ago 1 lug 2009, 06:25 GMT-4

How do you do subdomain integration in comsol script. I just want to find integral of u over one subdomain.


The standard trick:
Use the GUI, calculate the integral from the postprocessing menu.
Save the model as an .m-file.
Open the m-file and see what happened in the end of the file.
You should find a line containing the 'postint' command. The syntax is pretty straightforward look in the manual fort more details.

As I said, whatever command corresponding to the "GUI buttons" could be found this way.
regards Nisse
[QUOTE] How do you do subdomain integration in comsol script. I just want to find integral of u over one subdomain. [/QUOTE] The standard trick: Use the GUI, calculate the integral from the postprocessing menu. Save the model as an .m-file. Open the m-file and see what happened in the end of the file. You should find a line containing the 'postint' command. The syntax is pretty straightforward look in the manual fort more details. As I said, whatever command corresponding to the "GUI buttons" could be found this way. regards Nisse
Juan Parra-Robles
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Posted: 2 decades ago 1 lug 2009, 08:23 GMT-4
Thanks Nisse,
yes, I tried what you recommended and works. My final implementation was even simpler and more flexible using the postint command.
Cheers




How do you do subdomain integration in comsol script. I just want to find integral of u over one subdomain.


The standard trick:
Use the GUI, calculate the integral from the postprocessing menu.
Save the model as an .m-file.
Open the m-file and see what happened in the end of the file.
You should find a line containing the 'postint' command. The syntax is pretty straightforward look in the manual fort more details.

As I said, whatever command corresponding to the "GUI buttons" could be found this way.
regards Nisse


Thanks Nisse, yes, I tried what you recommended and works. My final implementation was even simpler and more flexible using the postint command. Cheers [QUOTE] [QUOTE] How do you do subdomain integration in comsol script. I just want to find integral of u over one subdomain. [/QUOTE] The standard trick: Use the GUI, calculate the integral from the postprocessing menu. Save the model as an .m-file. Open the m-file and see what happened in the end of the file. You should find a line containing the 'postint' command. The syntax is pretty straightforward look in the manual fort more details. As I said, whatever command corresponding to the "GUI buttons" could be found this way. regards Nisse [/QUOTE]

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