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How to find, save, and use the variable value in specific time in model setting

Posted Mar 12, 2024, 10:50 p.m. EDT Studies & Solvers, Modeling Workflow Version 6.2 1 Reply

I Hsiang Liao
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Deal all

I would like to ask some technical issues.

Assume that the PDE problem, where variable is called S.

when S(t=5)<=S(t=4), then save S(t=4) in a variable K. Again, if S(t=13)<=S(t=12), then save S(5=12) in that variable K. Therefore, K(1)=S(t=4) and K(2)=S(t=12).

The above problem is very easy adoped in MATLAB by using for circle and array [], but it seems that difficult adoped in COMSOL.

I would like to ask how to get the value in model setting so that it can be used in solving process.

1 Reply Last Post Mar 13, 2024, 4:09 a.m. EDT
Edgar J. Kaiser Certified Consultant
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Posted: 8 months ago Mar 13, 2024, 4:09 a.m. EDT

Check this blog post by Walter Frei: https://www.comsol.de/blogs/using-the-previous-solution-operator-in-transient-modeling/

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Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
Check this blog post by Walter Frei: https://www.comsol.de/blogs/using-the-previous-solution-operator-in-transient-modeling/

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