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Does hydrostatic pressure affect diffusion in the model?

Posted Jun 21, 2019, 1:32 a.m. EDT Version 5.4 1 Reply

Happy Ma
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COMSOL version 5.4 can calculate the diffusion-induced stress of particles. Does hydrostatic pressure take into account in the model? Because chemical potential is the driving force of diffusion, is the hydrostatic pressure considered in the model?

1 Reply Last Post Jun 24, 2019, 2:24 a.m. EDT
Lasse Murtomäki
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Posted: 5 years ago Jun 24, 2019, 2:24 a.m. EDT
Updated: 5 years ago Jun 24, 2019, 2:24 a.m. EDT

Hydrostatic pressure is mechanical, it does not rise from the chemical potential of the species. Hence, you have to add it in the model as the volume force.

Hydrostatic pressure is mechanical, it does not rise from the chemical potential of the species. Hence, you have to add it in the model as the volume force.

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