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Very Basic Comsol Questions

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Hi all,

I am a comsol beginner and am trying to solve a simple diffusion problem. I have three domains that look like the following -_- except they are connected and overlap so fluid can flow in the left side, go down, then come back up through the right side. The conditions are that the left channel and bottom channel contain 1M NaCl and the right channel contains H2O. I need to find how long it takes for the NaCl to diffuse and mix with the water. This is a closed system.

I set everything up in comsol, but it takes a while to calculate. Since all I am interested is how long it takes to mix, is there a shortcut to let the simulation just show that time and now have to run everything transiently and manually go through the times to find when the two solutions have mixed?

Thanks

1 Reply Last Post Jun 23, 2011, 3:08 a.m. EDT

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Posted: 1 decade ago Jun 23, 2011, 3:08 a.m. EDT
maybe with a stationnary study, I don't know....
maybe with a stationnary study, I don't know....

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