Hammouti, Abdelkader et Pham Van Bang, Damien. 2025. « Multiscale numerical simulation of flow in porous media using 3D digital twin models from computed tomography ». Communication lors de la conférence : CSME-CFDSC-CSR 2025 International Congress (Montreal, QC, Canada, May 25-28, 2025).
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Résumé
Over the past decade, advancements in the numerical resolution of the Navier-Stokes equations for multiphase flow modeling have enabled the study of key transport processes in porous media while accounting for non-Darcian effects, including inertial, boundary, and variable porosity influences. Simultaneously, improvements in post-processing techniques for CT-scan images (such as reconstruction and segmentation) applied to porous material samples have made the process increasingly reliable. As a result, integrating real and complex geometries from CT scans into numerical simulations has become a cutting-edge topic in scientific research. This study explores different numerical approaches that utilize Computed Tomography (CT) data for porous media modeling, focusing on intricate couplings between flow dynamics and fluid-solid interactions. We present a workflow for generating a 3D numerical model from CT-scan images of porous media for Computational Fluid Dynamics (CFD) simulations. The uncertainties in porosity and permeability are assessed using CT-scan datasets of a reference material—assemblies of monodisperse glass beads—for which analytical and empirical solutions are available in the literature. Meshes are generated using the open-source platform Salome, and numerical simulations are conducted with Code_Saturne, a multiphysics CFD software based on a finite-volume approach, which supports arbitrary cell types and grid structures. The resolution of CT-scan data acquisition and the selection of image post-processing filters play a crucial role in the accuracy of numerical solutions. Notably, the reconstruction of pore space interfaces alters surface and volume representations, significantly affecting porosity and, consequently, permeability calculations. This study provides a detailed uncertainty analysis for an ideal porous medium, serving as a reference framework for the development of a multiscale and multiphysics methodology applicable to various particle assemblies, including geomaterials.
| Type de document: | Communication (Communication) |
|---|---|
| Informations complémentaires: | Progress in Canadian Mechanical Engineering, Volume 8. Co-chairs: Lucas A. Hof, Giuseppe Di Labbio, Antoine Tahan, Marlène Sanjosé, Sébastien Lalonde and Nicole R. Demarquette. |
| Professeur: | Professeur Pham Van Bang, Damien |
| Affiliation: | Génie de la construction |
| Date de dépôt: | 18 déc. 2025 14:44 |
| Dernière modification: | 18 déc. 2025 14:44 |
| URI: | https://espace2.etsmtl.ca/id/eprint/32202 |
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