Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1002/nme.7621 |
Licence  |
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| Title (Primary) | Variational phase-field fracture approach in reactive porous media |
| Author | Mollaali, M.; Yoshioka, K.; Lu, R.; Montoya, V.; Vilarrasa, V.; Kolditz, O.
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| Source Titel | International Journal for Numerical Methods in Engineering |
| Year | 2025 |
| Department | ENVINF |
| Volume | 126 |
| Issue | 1 |
| Page From | e7621 |
| Language | englisch |
| Topic | T8 Georesources T5 Future Landscapes |
| Keywords | DECOVALEX; dissolution; EURAD; OpenGeoSys; phase-field for brittle fracture; PHREEQC; reactive transport |
| Abstract | 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. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=29841 |
| Mollaali, M., Yoshioka, K., Lu, R., Montoya, V., Vilarrasa, V., Kolditz, O. (2025): Variational phase-field fracture approach in reactive porous media Int. J. Numer. Methods Eng. 126 (1), e7621 10.1002/nme.7621 |
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