Eulerian two phase flow&porous media
 

Hello everybody,
I intend modeling liquid-solid particles two phase flow(with Eulerian Granular flow) and investigation filter cake formation by particles deposition on porous surface.I do this modeling with determine very low permeability for particles but solution isn't converge and filter cake don't formation on porous surface.
am I need UDF for modeling particles deposition and filter cake formation?
Please guide me