Variational Phase-Field Fracture Approach in Reactive Porous Media
We present a comprehensive model to simulate fracture nucleation and propagation in porous media, incorporating chemical reactions. This model integrates three main processes: fluid flow in porous media, reactive transport, and the mechanical deformation of fractured porous media using a variational...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/377618 |
| Acceso en línea: | http://hdl.handle.net/10261/377618 https://api.elsevier.com/content/abstract/scopus_id/85214237727 |
| Access Level: | acceso abierto |
| Palabra clave: | Reactive transport DECOVALEX Dissolution EURAD OpenGeoSys Phase-field for brittle fracture PHREEQC |
| Sumario: | We present a comprehensive model to simulate fracture nucleation and propagation in porous media, incorporating chemical reactions. This model integrates three main processes: fluid flow in porous media, reactive transport, and the mechanical deformation of fractured porous media using a variational phase-field approach. To account for chemical reactions, we use the geochemical package PHREEQC, coupled with a finite-element transport solver (OpenGeoSys), to model reactions in both thermodynamic equilibrium and kinetically, considering changes in porosity. To represent chemical damage, we introduce a variable that ranges from intact material to fully damaged material. This variable accounts for changes in porosity as a result of chemical reactions, separate from the mechanical damage represented by the phase-field variable. We test our model through various examples to showcase its ability to capture fracture nucleation and propagation driven by chemical reactions. Our model is implemented within the open-source finite element framework OpenGeoSys. |
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