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Coupling of an algebraic equation with Transport of Diluted Species
Posted Apr 10, 2024, 9:35 a.m. EDT 2 Replies
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Dear COMSOL community!
I'm very new to the software and I couldn't find anything in the documentation, so maybe one of you can give me a quick hint.
I'm using the Transport of Diluted Species module to compute concentration profiles (2D) in a nanofluidic device. Now I want to add a chemical equilbrium condition at a boundary: K(G0 - Gs) - cGs = 0, where K and G0 are constants, c is the concentration at the boundary (dependent variable from the Transport of Diluted Species) and Gs is a surface concentration (the variable I want to solve for). I'm trying to implement that using the Boundary ODEs and DAEs module. However, I don't quite get how the dependent variable from the TDS can be accessed. Especially I don't get how to get the concentration value just at the boundary, i.e. the 1D concentration distribution.
Thank you!
Best regards, Florian
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Hello Florian,
Perhaps this tutorial model could be helpful to you.
Jeff
-------------------Jeff Hiller
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Thank you, that helped a lot!
Cheers, Florian