Speaker
Description
Accurately predicting multiphase flow is a challenging task because the displacement of the two fluid phases depends on a complex interplay between surface tension effects and viscous forces, resulting in non-linear behavior. In this study, we employ pore-doublet models to investigate the stability of two-phase flow across a wide range of fluid properties and flow rates. Pore-doublets – a conceptual model consisting of two parallel pores – are commonly used to explore two-phase flow stability in porous media. We develop a novel dynamic pore-doublet model with identical channels that incorporates the effects of inertia and Bretherton's films—factors often neglected in pore-doublet modeling. Direct comparisons between the model and microfluidic experiments reveal that both inertia and Bretherton's films significantly influence the stability of the invasion process. We demonstrate that including these effects in the model is crucial for achieving accurate predictions of flow regimes. Finally, we show that pore-doublet models with wetting layers can replicate stability phase diagrams similar to the Lenormand phase diagrams, despite the latter being derived from complex porous structures.
| Country | France |
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