[Chander]

Hi,

CFX 13 manual states that CFX does not allow anisotropic porosity i.e. the area porosity tensor is isotropic.
I model microchannels as porous medium and to force the liquid in only one direction (the axial direction of channels), I use anisotropic permeability and Kloss values. I impose about 10 times smaller permeability in transverse direction to flow to inhibit the flow in that direction. This works.

However, I just wanted to check if there is any hidden CCL by which one can impose anisotrpic porosity in porous medium (actual porosity in direction of flow and zero porosity in direction transverse to flow) and avoid using anisotropic permeability. I guess if it is indeed possible to do this, this will be a closer approximation of the flow physics.
Thanks for your inputs.
Chander