Two Phase Flow
Two Phase Flow
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Studying two-phase flow in porous media addresses core questions: How do capillary, viscous and gravitational forces set fluid distribution and pathways? What controls hysteresis in pressure-saturation and relative permeability, wettability, pore geometry? How do pore-scale and interfacial dynamics combine to determine macroscopic transport, displacement, mixing efficiency and reversibility?
Answering these questions helps developing reliable models for subsurface energy storage (e.g., CO₂, H₂), groundwater sanitation, and permafrost system.
3D-Printed porous media
In order to visualise fluid flowing through porous media, we fabricate transparent structures with a resin 3D printer using Low Force Stereolithography (LFS). After a few post-processing steps (rincing, curing and coating), our samples get almost as clear as glass. Their structure is fully tunable and precisely adjusted.
Imaging
Our fluidic setup allows us to inject simultaneously different fluids through 3D-printed porous structures, while recording the flows motion with a high speed camera and the evolution of inlet and outlet pressures using connected sensors. All the devices composing the system are controlled with a single python script.
Because our samples are transparent, we can record flow with an uniform backlight. Contrast comes from either adding a dye to one phase (first video) or using the interfacial refraction “ring” that appears when the fluids have a large refractive-index mismatch (second video). This simple setup yields sharp silhouettes and interfaces suitable for quantitative analysis.
TIFF_Triangles_RPO_5fps_50U_4.mp4T85_SiliconOil_Air_AB_1_MM_(1)_10fps_360s_20251022_112138_cam.aviPage updated
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