[Enternald]

Hi all,

I am trying to use chtMultiRegionFoam to solve the mass transfer (approximated as Fick's Law) through a solid. So the geometry that I have setup looks like this.

oxygen (fluid) (10cm tall)
solid membrane (solid) (1mm tall)
'vacuum' (approximated by low oxygen region) (fluid) (1cm tall)

I believe I need an two internal boundary layers on the membrane, one at the concentration of oxygen in the top and one initially at the low-zero concentration of oxygen at the bottom (outlet) of the solid material.
Does anyone have any experience or examples of using this chtMultiRegionFoam being used for a mass transfer problem? I am assuming isothermal as well.

Any help or direction would be much appreciated! Thank you.