Emergence of dissipation and hysteresis from interactions among reversible, nondissipative units: The case of fluid-fluid interfaces
We examine the nonequilibrium nature of two-phase fluid displacements in a quasi-two-dimensional medium (a model open fracture) in the presence of localized constrictions ("defects") from a theoretical and numerical standpoint. Our analysis predicts the capillary energy dissipated in abrup...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/360506 |
| Acceso en línea: | http://hdl.handle.net/10261/360506 https://api.elsevier.com/content/abstract/scopus_id/85195297444 |
| Access Level: | acceso abierto |
| Palabra clave: | Fluid interfaces http://metadata.un.org/sdg/6 Ensure availability and sustainable management of water and sanitation for all Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss |
| Sumario: | We examine the nonequilibrium nature of two-phase fluid displacements in a quasi-two-dimensional medium (a model open fracture) in the presence of localized constrictions ("defects") from a theoretical and numerical standpoint. Our analysis predicts the capillary energy dissipated in abrupt interfacial displacements (jumps) across defects, and relates it to the corresponding hysteresis cycle, e.g., in pressure-saturation. We distinguish between "weak"(reversible interface displacement, exhibiting no hysteresis and dissipation) and "strong"(irreversible) defects. We expose the emergence of dissipation and irreversibility caused by spatial interactions, mediated by interfacial tension, among otherwise weak defects. We exemplify this cooperative behavior for a pair of weak defects and establish a critical separation distance, analytically and numerically, verified by a proof-of-concept experiment. |
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