A multi-scale experimental investigation on the interfacial drag characteristic in porous media through capillary forces and capillary bridge dynamics

Key Points

• Interfacial drag characteristics are influenced by capillary forces within porous media, enhancing our understanding of fluid behavior in complex environments.
• The study measures drag interactions at a multi-scale level, with parameters demonstrating significant variations based on the system's capillary dynamics.
• Observational analysis evaluates capillary bridge formations and their impact on drag forces during experiments with fluids in porous structures.
• Understanding these dynamics may enable improved designs for applications like filtration, oil recovery, and groundwater management.