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How to recover the initial and boundary conditions from a result in comsol?

Posted 6 oct. 2020, 10:43 UTC−4 RF & Microwave Engineering, General, Introduction 1 Reply

Fernando Diego Engels Crespo
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Hi, suppose i have a component in comsol from which i obtained several different results with different boundary and initial conditions. Is there a way to obtained the boundary conditions applied to each different result?and how would i do thar? i suppose there has to be a way but i cant find it.

1 Reply Last Post 17 oct. 2020, 22:02 UTC−4
Robert Koslover Certified Consultant
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Posted: 4 years ago 17 oct. 2020, 22:02 UTC−4
Updated: 4 years ago 17 oct. 2020, 22:04 UTC−4

If you specified each of those different bc's and/or initial conditions in different .mph files, then those specifications would still be there, after problem execution. On the other hand, if you specified each of those different bc's and/or initial conditions as parameters, using a parametric solver, with storing all the results along the way, then the results (when you go to plot them) will be organized in accordance with with the conditions (the parameters) that were set to obtain them.
So (either way in the above scenarios), the boundary and initial conditions you specified are not lost. And they are specifically associated with your solutions, after and during execution. So, anyway... if you are creating and executing Comsol Models that generate results, and store those results, yet somehow throw away the information about the boundary conditions and/or initial conditions along the way, I'm rather curious how you are accomplishing that. (By some chance, are you running Comsol Multiphysics via Matlab?) Regardless, do you have an example file (or set of files) that clearly exhibits this strange behavior? If so, please post it to the forum, so other users can see what is happening in your model and can offer specific and more helpful suggestions. Best regards.

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Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
If you specified each of those different bc's and/or initial conditions in different .mph files, then those specifications would still be there, after problem execution. On the other hand, if you specified each of those different bc's and/or initial conditions as parameters, using a parametric solver, with storing all the results along the way, then the results (when you go to plot them) will be organized in accordance with with the conditions (the parameters) that were set to obtain them. So (either way in the above scenarios), the boundary and initial conditions you specified are not lost. And they are specifically associated with your solutions, after and during execution. So, anyway... if you are creating and executing Comsol Models that generate results, and store those results, yet somehow *throw away* the information about the boundary conditions and/or initial conditions along the way, I'm rather curious how you are accomplishing that. (By some chance, are you running Comsol Multiphysics via Matlab?) Regardless, do you have an example file (or set of files) that clearly exhibits this strange behavior? If so, please post it to the forum, so other users can see what is happening in your model and can offer specific and more helpful suggestions. Best regards.

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