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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 The information provided may be out of date.

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Changing variables between time steps

Posted 2012年4月18日 GMT-4 10:16 Low-Frequency Electromagnetics, Materials, Modeling Tools & Definitions, Parameters, Variables, & Functions, Studies & Solvers Version 4.2, Version 4.2a, Version 4.3 5 Replies

Stefan Sjökvist
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Hi everyone,

I have a studied how the standard time dependent solver works by checking the check box "show results while solving" then I can see the all time steps update one after another. I have noticed that the solver sometimes go back and recalculates a time step.

Now my question is; can I add my own conditions that will be checked after each time step and if they are fulfilled, change a variable, recalculate that time step and then continue as normal?

I run Comsol 4.2 and have Livelink to Matlab etc. if that helps!?

Thanks,
Stefan
5 Replies Last Post 2012年7月30日 GMT-4 02:18
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Hello Stefan Sjökvist

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Foad Samadi
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Posted: 1 decade ago 2012年6月11日 GMT-4 19:07
have you found any solution to this yet?! I encounter the same problem. I like to have access to solution at each time-step, change some parameters at that step and go to the next. If you could come up with some hints please let me know. Thanks.
have you found any solution to this yet?! I encounter the same problem. I like to have access to solution at each time-step, change some parameters at that step and go to the next. If you could come up with some hints please let me know. Thanks.
Stefan Sjökvist
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Posted: 1 decade ago 2012年6月12日 GMT-4 02:25
Unfortunately not. At the moment I don’t have so much time to look into it, but when/if I find a solution I will post it here!
I Think I will try contacting the support about this question.
Unfortunately not. At the moment I don’t have so much time to look into it, but when/if I find a solution I will post it here! I Think I will try contacting the support about this question.
Foad Samadi
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Posted: 1 decade ago 2012年6月12日 GMT-4 10:29
Thanks.
Thanks.
Oscar Vera
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Posted: 1 decade ago 2012年7月11日 GMT-4 10:00
Hi,


any update about this problem? I am also interested in changing the value of one variable before doing the next step in a time step simulation.
Hi, any update about this problem? I am also interested in changing the value of one variable before doing the next step in a time step simulation.
Stefan Sjökvist
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Posted: 1 decade ago 2012年7月30日 GMT-4 02:18
No progress yet, unfortunately. I have been on vacation and in August I will not have so much time to look into this, but hopefully in September.
No progress yet, unfortunately. I have been on vacation and in August I will not have so much time to look into this, but hopefully in September.

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