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How to Obtain a 2D Projection Averaging Concentration Along the Z Axis?

Posted May 9, 2024, 7:11 a.m. EDT Version 5.6 3 Replies

Francesc Subirada
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Hello everyone,

I'm currently working on a simulation involving the mixing of two products within a microfluidic chip using COMSOL Multiphysics. I have successfully completed the simulation, but now I'm trying to generate a 2D projection of the average concentration in the XY plane by averaging values along the Z axis. This way, I can directly compare the simulated results with my experimental data.

  • The Challenges I'm Facing: I have tried using the Results section and the various Data Sets options, but I couldn't find a straightforward way to average the concentration data along the Z direction. I'm not sure how to set up a custom 2D Plot Group that can represent the average concentration.
  • What I'm Looking For: A method to generate a 2D plot that shows the average concentration values in the XY plane, averaged along the Z direction. Suggestions or advice on how to export these results in a format that can be compared with my experimental data. I'd greatly appreciate any insights or recommendations you could provide to help me visualize and export this 2D projection properly.

Thank you in advance for your help!

Best regards, Francesc

3 Replies Last Post May 21, 2024, 9:14 a.m. EDT
Jeff Hiller COMSOL Employee

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Posted: 6 months ago May 9, 2024, 8:50 a.m. EDT

Hello Francesc,

This sounds like a job for a nonlocal coupling operator, of the projection type. Please refer to the Reference Manual for COMSOL Multiphysics version 6.2, page 391 and following.

Best,

Jeff

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Jeff Hiller
Hello Francesc, This sounds like a job for a nonlocal coupling operator, of the projection type. Please refer to the Reference Manual for COMSOL Multiphysics version 6.2, page 391 and following. Best, Jeff
Francesc Subirada
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Posted: 6 months ago May 21, 2024, 8:50 a.m. EDT

Hi,

I use de 5.6 version and I can't find the instructions in the manual. Could you help me finding the commands to complete this job?

Thanks! Francesc

Hi, I use de 5.6 version and I can't find the instructions in the manual. Could you help me finding the commands to complete this job? Thanks! Francesc
Jeff Hiller COMSOL Employee

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Posted: 6 months ago May 21, 2024, 9:14 a.m. EDT
Updated: 6 months ago May 22, 2024, 8:34 a.m. EDT

Hello Francesc,

I do not have version 5.6 installed any longer, but if you open the pdf for the version 5.6 Reference Manual and do a Ctrl+F search for words like nonlocal and coupling operator, you should find it pretty easily.

Alternatively, since this particular capability has not changed recently as far as I know, you can probably follow the version 6.2 manual found here, despite using version 5.6.

Best,

Jeff

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Jeff Hiller
Hello Francesc, I do not have version 5.6 installed any longer, but if you open the pdf for the version 5.6 Reference Manual and do a Ctrl+F search for words like nonlocal and coupling operator, you should find it pretty easily. Alternatively, since this particular capability has not changed recently as far as I know, you can probably follow the version 6.2 manual found [here](https://doc.comsol.com/6.2/docserver/#!/com.comsol.help.comsol/helpdesk/helpdesk.html), despite using version 5.6. Best, Jeff

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