Abstract:In this paper, we conduct a thorough mathematical analysis of the unified formulation advocated by Lauser et al. [Adv. Water Res. 34 (2011) 957–966] for compositional multiphase flows in porous media. The interest of this formulation lies in its potential to automatically handle the appearance and disappearance of phases. However, its practical implementation turned out to be not always robust for realistic fugacity laws associated with cubic equations of state, as shown by Ben Gharbia and Flauraud [Oil Gas Sc… Show more
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