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Marco De Paoli @marcodepaoli.bsky.social · 9d

🧵 9/n @poftwente.bsky.social #physics #engineering @utwente.bsky.social @tuwien.at

Marco De Paoli @marcodepaoli.bsky.social · 9d

🧵 8/n We also acknowledge the @eurohpc-ju.bsky.social for awarding the projects EHPC-BEN-2024B08-060 and EHPC-EXT-2024E02-122 to access the EuroHPC supercomputer MareNostrum5 hosted at the @bsc-cns.bsky.social (Spain).

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Marco De Paoli @marcodepaoli.bsky.social · 9d

🧵 7/n This project has received funding from the European Union’s @horizoneu.bsky.social (@scienceinnovation.ec.europa.eu) under Marie Sklodowska-Curie grant agreement MEDIA no. 101062123.

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Marco De Paoli @marcodepaoli.bsky.social · 9d

🧵 6/n Thanks to Guru Sreevanshu Yerragolam (@utwente.bsky.social), Roberto Verzicco (Gran Sasso Science Institute)
and @detleflohse.bsky.social (@utwente.bsky.social) for the great collaboration.

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Marco De Paoli @marcodepaoli.bsky.social · 9d

🧵 5/n The paper is published on J. Fluid Mech. (@cambup-scieng.cambridge.org) and freely available for download here www.cambridge.org/core/journal...

Solute mixing in porous media with dispersion and buoyancy | Journal of Fluid Mechanics | Cambridge Core

Solute mixing in porous media with dispersion and buoyancy - Volume 1020

www.cambridge.org

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Marco De Paoli @marcodepaoli.bsky.social · 9d

🧵 4/n Salt water basins are used to manage water resources in regions where the subsurface is characterised by high-salinity groundwater. Here marcodepaoli.com/2025/10/01/d... we provide an example.

Predicting dispersion of contaminants

Transport and dispersion of contaminants in the subsurface are common to many geophysical and industrial applications. How can we model these processes including dispersion and buoyancy?

marcodepaoli.com

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Marco De Paoli @marcodepaoli.bsky.social · 9d

🧵 3/n However, when the flow is driven #buoyancy forces induced by the contaminant itself, predictions may be uncertain. This is the case of salt dispersion from artificial lakes.

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Marco De Paoli @marcodepaoli.bsky.social · 9d

🧵 2/n #Transport and #dispersion of #contaminants in the subsurface are common to many geophysical and industrial applications, from the management of nuclear waste to the dispersion of chemicals and pollutants. Dispersion models to predict these scenarios exist, and are well developed.

Schematic representation of the hydrogeology of the River Murray basin area (Australia).

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Marco De Paoli @marcodepaoli.bsky.social · 9d

🚨 PAPER ALERT 🚨 Can we predict the #dispersion of contaminants in #groundwater flows?

🧵 1/n Here marcodepaoli.com/2025/10/01/d... we provide an example.

Movie: Evolution of a Rayleigh-Taylor system in porous media with dispersion and buoyancy.

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Marco De Paoli @marcodepaoli.bsky.social · May 6

3/3 @utwente.bsky.social @tuwien.at @poftwente.bsky.social

Open access provided by @tuwien.at
Funding provided by @fwf-at.bsky.social
📸 Image: Sketch of a slender fibre undergoing both rotation and translation.

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Marco De Paoli @marcodepaoli.bsky.social · May 6

2/3 In this work with Giuseppe CA Caridi, Vlad Giurgiu and Alfredo Soldati, we quantify the uncertainty associate with these measurements, and provide guidelines to optimise the acquisition parameters. This work published on @Experiments in Fluids is #open #access and available here rdcu.be/ekP9O

Complete solid-body rotation rate measurements of micro-plastic curved fibers in turbulence

rdcu.be

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Marco De Paoli @marcodepaoli.bsky.social · May 6

🚨 new paper alert 🚨
1/3 🌊 Measuring experimentally the dispersion of #microplastic #fibres in turbulent flows is incredibly challenging, due to their small size. However, experiments are key to develop reliable models to predict the fate of microplastics in #environmental #flows.

Rotation and translation of a long curved fiber

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Reposted by Marco De Paoli

Science X / Phys.org @sciencex.bsky.social · Apr 8

Computer simulations indicate that CO2 can be stored underground indefinitely by dissolving in groundwater, forming a denser liquid that sinks, ensuring long-term storage under suitable geological conditions. doi.org/g9dtm4

Computer simulations suggest CO&#8322; can be stored underground indefinitely

We have to stop emitting carbon dioxide (CO2) if we want to save the climate—there is no doubt about that. But that alone will not be enough.

phys.org

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Reposted by Marco De Paoli

TU Wien @tuwien.at · Apr 8

Lässt sich CO2 dauerhaft im Boden speichern? Ja, sagt eine neue Modellrechnung der TU Wien, die genau analysiert, wie sich CO2-haltiges Wasser im Boden verhält. www.tuwien.at/tu-wien/aktu...

Wie man Kohlendioxid für immer loswird

Was passiert, wenn man abgeschiedenes CO2 in den Boden pumpt? Hochaufwändige Computersimulationen ermöglichen es nun, das langfristige Verhalten vorherzusagen.

www.tuwien.at

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Marco De Paoli @marcodepaoli.bsky.social · Apr 1

🧵8/8 The manuscript and the data are freely available for download.

📕 Paper agupubs.onlinelibrary.wiley.com/doi/10.1029/...

💻 Data figshare.com/articles/dat...

#PhysicsOfFluids #physics #engineering #OpenAccess #OpenSource #UniversityTwente #TUWien

Simulation and Modeling of Convective Mixing of Carbon Dioxide in Geological Formations

Convective mixing of carbon dioxide in geological formations follows different regimes During a regime in which the flux is constant, mixing in 3D simulations is 13% larger than in 2D simulations...

agupubs.onlinelibrary.wiley.com

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Marco De Paoli @marcodepaoli.bsky.social · Apr 1

🧵7/8 We acknowledge the @eurohpc-ju.bsky.social for awarding the project GEOCOSE and for granting access to the EuroHPC supercomputer LUMI‐C, hosted by the @lumi-supercomputer.eu consortium (Finland).

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Marco De Paoli @marcodepaoli.bsky.social · Apr 1

🧵6/8 This project has received funding from the European Union's @horizoneu.bsky.social research and innovation programme under the Marie Sklodowska‐Curie grant agreement MEDIA.

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Marco De Paoli @marcodepaoli.bsky.social · Apr 1

🧵5/8 This work is the result of a collaboration between the @poftwente.bsky.social @utwente.bsky.social, @newcastleuni.bsky.social, Sapienza Università di Roma and @tuwien.at.

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Marco De Paoli @marcodepaoli.bsky.social · Apr 1

🧵4/8 With this dataset, which we make freely available, we derive a simple, reliable and accurate physical model to describe the post‐injection dynamics of carbon dioxide. This model can be used to identify suitable sequestration sites or to design carbon dioxide injection strategies.

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Marco De Paoli @marcodepaoli.bsky.social · Apr 1

🧵3/8 We used massively parallelized numerical simulations to systematically investigate the flow dynamics in 3D systems and provide a robust quantification of the differences occurring with respect to ideal 2D systems.

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Marco De Paoli @marcodepaoli.bsky.social · Apr 1

🧵2/8 In our new #Open #Access paper, published today on Geophysical Research Letters @agu.org, we answer this question in the context of homogenous and isotropic rock formations.

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Marco De Paoli @marcodepaoli.bsky.social · Apr 1

🧵1/8 To mitigate the catastrophic effects of #globalwarming, we will have to capture from the atmosphere billions of tons of #carbondioxide, and store it underground.

And there is no doubt about that.

But what will it happen in the subsurface?

agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Simulation and Modeling of Convective Mixing of Carbon Dioxide in Geological Formations

Convective mixing of carbon dioxide in geological formations follows different regimes During a regime in which the flux is constant, mixing in 3D simulations is 13% larger than in 2D simulations...

agupubs.onlinelibrary.wiley.com

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Marco De Paoli @marcodepaoli.bsky.social · Mar 20

🧵6/6 This contribution represents a key milestone of the Marie Sklodowska-Curie Fellowship MEDIA (project n. 101062123), funded from the @ec.europa.eu Horizon Europe.
The code and the paper are freely available for download.
📕 Paper doi.org/10.1016/j.cp...
💻 Code github.com/depaolimarco...

Redirecting

doi.org

Marco De Paoli @marcodepaoli.bsky.social · Mar 20

🧵5/6 Two different algorithms are proposed to solve the scalar transport and to efficiently adapt to the different flow conditions.

📸 In the figure: Evolution of a Rayleigh-Taylor instability in a porous - 3D visualization of the concentration field.

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Marco De Paoli @marcodepaoli.bsky.social · Mar 20

🧵4/6 AFiD-Darcy is suitable to investigate different canonical flows. To show the code's capabilities, the maximal driving strength explored has been doubled as compared to state-of-art simulations, corresponding to an increase of the associated computational effort of about 8 to 16 times.

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