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Digital Rock Physics: computation of hydrodynamic dispersion
Authors
Laurent Arbaret
Laurence Girolami
Sophie Roman
Cyprien Soulaine
Publication date
1 January 2021
Publisher
'EDP Sciences'
Doi
Cite
Abstract
International audienceHydrodynamic dispersion is a crucial mechanism for modelling contaminant transport in subsurface engineering and water resources management whose determination remains challenging. We use Digital Rock Physics (DRP) to evaluate the longitudinal dispersion of a sandpack. From a three-dimensional image of a porous sample obtained with X-ray microtomography, we use the method of volume averaging to assess the longitudinal dispersion. Our numerical implementation is open-source and relies on a modern scientific platform that allows for large computational domains and High-Performance Computing. We verify the robustness of our model using cases for which reference solutions exist and we show that the longitudinal dispersion of a sandpack scales as a power law of the PĂ©clet number. The assessment methodology is generic and applies to any kind of rock samples
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HAL-OBSPM
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oai:HAL:hal-03275296v1
Last time updated on 03/12/2021
EDP Sciences OAI-PMH repository (1.2.0)
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oai:edpsciences.org:dkey/10.25...
Last time updated on 09/07/2022