LTNE model for partially filled porous media
 

I want to model a 2d tube partially filled with porous media using non-thermal equilibrium model. For this I need two fluid zones with interface boundary between them. However, Interface boundary condition between the two zones is not supported by non-equilibrium model here as the fluid and solid zones become non-conformal. I also tried with importing solid and fluid zones separately but couldn't find out solution.. Is there any other way! How to do it! Please help!