The Partition Condition node can be used to prescribe the ratio between the concentration of a solute species in two different immiscible phases. It can for example be used on interior boundaries separating two liquid phases, a gas-liquid interface, or on a boundary separating a liquid phase and a solid or porous media. For a species concentration
ci, the ratio between the concentration on the up side
and on the down side of the boundary (
ci,u and
ci,d respectively) is defined as
in terms of a partition coefficient Ki. The up and down side of the selected boundary is indicated in the Graphics window. The arrows point from the down side into the up side.
Select the Reverse direction check box to reverse the direction of the arrows on the selected boundaries, and the corresponding definition of the up and down side concentration.
