Multiphase flow in porous media using CFD

Casper Schytte Hemmingsen, Jens Honore Walther

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Abstract

We present results from a new Navier-Stokes model for multiphase flow in porous media implemented in Ansys Fluent 16.2 [1]. 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.
Original languageEnglish
Publication date2016
Number of pages2
Publication statusPublished - 2016
EventECCOMAS Congress 2016: VII European Congress on Computational Methods in Applied Sciences and Engineering - Creta Maris Conference Center, Hersonissos, Greece
Duration: 5 Jun 201610 Jun 2016
https://www.eccomas2016.org/

Conference

ConferenceECCOMAS Congress 2016
LocationCreta Maris Conference Center
CountryGreece
CityHersonissos
Period05/06/201610/06/2016
Internet address

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