Speaker
Description
Understanding how fluids move, mix, and react inside natural porous media is central to subsurface decarbonization (CO₂ trapping/mineralization) and hydrogen-related geo-energy systems, yet remains challenging because the controlling mechanisms span extreme ranges of chemistry, space and time. At the ESRF, we develop and operate an experimental imaging platform (ACHELOS) that explicitly targets this gap by combining ultra-fast 4D X-ray imaging with long-duration time-lapse investigations under in situ conditions.
On ID19, high-flux phase-contrast imaging enables time-resolved 3D/4D observations of rapid, often non-reproducible processes, capturing transient flow regimes and transport at high Péclet numbers beyond the reach of conventional laboratory tomography. In parallel, BM05 and BM18 provide complementary high-energy and hierarchical phase-contrast tomography capabilities tailored to in-situ flow analysis of thick samples and complex sample environments, enabling quantitative pore-scale characterization and time-lapse tracking of microstructural evolution.
These capabilities are extended to slow dynamics through the CHRONOS community access framework, which supports experiments over weeks to years, enabling direct observation of progressive fluid/rock interactions, transport/reaction coupling, and aging processes. This “fast and slow” strategy is relevant not only to geo-energy questions, but also to emerging needs in sustainable construction where bio- and geo-sourced porous materials exhibit coupled thermal, hydraulic, and chemical evolution over long times.
We outline representative measurements (imaging configurations, time sampling, and quantitative analysis pathways) and discuss how this platform can be leveraged by the InterPore community for robust, reproducible pore-scale science across time scales.
| Country | France |
|---|---|
| Green Housing & Porous Media Focused Abstracts | This abstract is related to Green Housing |
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