I've attached simplified model describing transport of the one component through membrane. I've made it simple to make you catch a problem easily. In my advanced model I'm using Laminar Flow physics and 2D axissymmetry as well.
The problem is with mass balance in this scheme - see Line Graphs. As a result it gives mass/mole fractions higher than 1 or lower than 0. Likely I don't get some sense of using Transport of concentrated species interface.
How can I make all of the components passing the membrane? As I'm choosing 3 components, I can define flux only for 2.
What happens on the feed side when part of the component is leaving by the wall? I think the pressure should decrease along the wall (according to decreasing of component partial pressure and friction influence on fluid flow), also mass flux decreases. Does Comsol "knows" that?
Are the Laminar flow and Transport of concentrated species interfaces sufficient to create property model in this case?
I wish you know the answers ;-)
I'm beginner - I'm sure you've guessed.
Anna
The problem is with mass balance in this scheme - see Line Graphs. As a result it gives mass/mole fractions higher than 1 or lower than 0. Likely I don't get some sense of using Transport of concentrated species interface.
How can I make all of the components passing the membrane? As I'm choosing 3 components, I can define flux only for 2.
What happens on the feed side when part of the component is leaving by the wall? I think the pressure should decrease along the wall (according to decreasing of component partial pressure and friction influence on fluid flow), also mass flux decreases. Does Comsol "knows" that?
Are the Laminar flow and Transport of concentrated species interfaces sufficient to create property model in this case?
I wish you know the answers ;-)
I'm beginner - I'm sure you've guessed.
Anna