Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Does hydrostatic pressure affect diffusion in the model?

Please login with a confirmed email address before reporting spam

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 AM EDT

Please login with a confirmed email address before reporting spam

Posted: 7 months ago Jun 24, 2019, 2:24 AM EDT
Updated: 7 months ago Jun 24, 2019, 2:24 AM 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.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.