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Models of two phase flows in porous media, used in petroleum engineering, lead to a system of two coupled equations with elliptic and parabolic degenerate terms, and two unknowns, the saturation and the pressure. For the purpose of their approximation, a coupled scheme, consisting in a finite volume method together with a phase-by-phase upstream weighting scheme, is used in the industrial setting. This paper presents a mathematical analysis of this coupled scheme, first showing that it satisfies some a priori estimates: the saturation is shown to remain in a fixed interval, and a discrete estimate is proved for both the pressure and a function of the saturation. Thanks to these properties, a subsequence of the sequence of approximate solutions is shown to converge to a weak solution of the continuous equations as the size of the discretization tends to zero.
Mots-clés : multiphase flow, Darcy's law, porous media, finite volume scheme
@article{M2AN_2003__37_6_937_0, author = {Eymard, Robert and Herbin, Rapha\`ele and Michel, Anthony}, title = {Mathematical study of a petroleum-engineering scheme}, journal = {ESAIM: Mathematical Modelling and Numerical Analysis }, pages = {937--972}, publisher = {EDP-Sciences}, volume = {37}, number = {6}, year = {2003}, doi = {10.1051/m2an:2003062}, zbl = {1118.76355}, mrnumber = {2026403}, language = {en}, url = {https://geodesic-test.mathdoc.fr/articles/10.1051/m2an:2003062/} }
TY - JOUR AU - Eymard, Robert AU - Herbin, Raphaèle AU - Michel, Anthony TI - Mathematical study of a petroleum-engineering scheme JO - ESAIM: Mathematical Modelling and Numerical Analysis PY - 2003 SP - 937 EP - 972 VL - 37 IS - 6 PB - EDP-Sciences UR - https://geodesic-test.mathdoc.fr/articles/10.1051/m2an:2003062/ DO - 10.1051/m2an:2003062 LA - en ID - M2AN_2003__37_6_937_0 ER -
%0 Journal Article %A Eymard, Robert %A Herbin, Raphaèle %A Michel, Anthony %T Mathematical study of a petroleum-engineering scheme %J ESAIM: Mathematical Modelling and Numerical Analysis %D 2003 %P 937-972 %V 37 %N 6 %I EDP-Sciences %U https://geodesic-test.mathdoc.fr/articles/10.1051/m2an:2003062/ %R 10.1051/m2an:2003062 %G en %F M2AN_2003__37_6_937_0
Eymard, Robert; Herbin, Raphaèle; Michel, Anthony. Mathematical study of a petroleum-engineering scheme. ESAIM: Mathematical Modelling and Numerical Analysis , Tome 37 (2003) no. 6, pp. 937-972. doi : 10.1051/m2an:2003062. https://geodesic-test.mathdoc.fr/articles/10.1051/m2an:2003062/
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