Speaker
Description
Modeling multicomponent multiphase (MCMP) flows in confined disordered media requires a tight, consistent coupling between thermodynamics, which controls phase behavior, phase transformations, and interfacial properties, and hydrodynamics, which governs transport and momentum exchange across complex pore geometries. Despite significant progress in both areas, the robust coupling of industrially relevant equation of state (EOS)-based mixture models to Navier-Stokes hydrodynamics remains a longstanding challenge in computational fluid dynamics. We will present a fugacity-based diffuse-interface model for multicomponent multiphase (MCMP) flow, evaluating the model's capability to accurately capture MCMP hydrodynamics while fully adhering to the thermodynamic behavior dictated by both cubic and non-cubic equations of state for multicomponent fluids. This approach addresses significant challenges that have previously hindered the direct simulation of multiphase flows involving multicomponent mixtures with complex phase behavior. We apply the proposed methodology to multicomponent mixtures described by standard cubic equations of state, by cubic-plus-association (CPA) models, which account for specific molecular interactions, and by the Perturbed-Chain Statistical Associating Fluid Theory (PC-SAFT) equation of state, known for its accuracy in representing complex fluids. By incorporating these diverse equations of state, our model demonstrates versatility and robustness in capturing the intricate flow dynamics of MCMP systems. Our findings reveal that the model effectively captures these dynamics, validating its potential for studying a broad range of MCMP flows in porous media.
| Country | Spain |
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