We present results from a new Navier-Stokes model for multiphase flow in porous media implemented in Ansys Fluent 16.2 . The model includes the Darcy-Forchheimer source terms in the momentum equations and proper account for relative permeability and capillary pressure in the porous media. This approach is widely used for single phase flow, but not for multiphase flow in porous media. This might be due to the complexity of introducing relative permeability and capillary pressure in the CFD solver.The introduction of relative permeability and capillary pressure may cause numerical instabilities as the saturation of a grid cell approaches the residual saturation, i.e. the relative permeability goes towards zero. This means that the viscous resistance in the Darcy-Forchheimer equation approaches infinity. Furthermore, by coupling the Navier-Stokes equation and Darcy-Forchheimer equation it is possible to model both the non-porous and porous media using the same formulation.
|Number of pages||2|
|Publication status||Published - 2016|
|Event||ECCOMAS Congress 2016: VII European Congress on Computational Methods in Applied Sciences and Engineering - Creta Maris Conference Center, Hersonissos, Greece|
Duration: 5 Jun 2016 → 10 Jun 2016
|Conference||ECCOMAS Congress 2016|
|Location||Creta Maris Conference Center|
|Period||05/06/2016 → 10/06/2016|