An HDG formulation for incompressible and immiscible two-phase porous media flow problems

Author (s): Costa-Solé, A.; Ruiz-Gironés, E. and Sarrate, J.
Journal: International Journal of Computational Fluid Dynamics

Volume: 33
Pages: 137 – 148
Date: 2019

Abstract:
We develop a high-order hybridisable discontinuous Galerkin (HDG) formulation to solve the immiscible and incompressible two-phase flow problem in a heterogeneous porous media. The HDG method is locally conservative, has fewer degrees of freedom than other discontinuous Galerkin methods due to the hybridisation procedure, provides built-in stabilisation for arbitrary polynomial degrees and, if the error of the temporal discretisation is low enough, the pressure, the saturation and their fluxes converge with order P+1 in L2-norm, being P the polynomial degree. In addition, an element-wise post-process can be applied to obtain a convergence rate of P+2 in L2-norm for the scalar variables. All of these advantages make the HDG method suitable for solving multiphase flow trough porous media. We show numerical evidence of the convergences rates. Finally, to assess the capabilities of the proposed formulation, we apply it to several cases of water-flooding technique for oil recovery.

Journal paper (from the publisher)  
Download file (0 MBytes)  

Bibtex:

@article{2019-IJCFD-CSRGS,
 Author = {Albert Costa-Sol\’e, and Eloi Ruiz-Giron\’es, and Josep Sarrate},
 Title = {An HDG formulation for incompressible and immiscible two-phase porous media flow problems},
 Fjournal = {International Journal of Computational Fluid Dynamics},
 Journal = {Int. J. Comput. Fluid D.},        
 Volume = {33},
 number = {4},
 Pages = {137-148},
 Year = {2019},
 Doi = {10.1080/10618562.2019.1617855},
}