Small scale · Work package b and c
The facility is dedicated to studying how bubbles interact and merge, a key phenomenon in many industrial gas–liquid processes. It features a transparent rectangular cell where two opposed capillaries generate pairs of bubbles under controlled conditions. By adjusting capillary size, spacing, and gas flow rate, the setup can reproduce a wide range of interaction scenarios.
A high-speed camera (up to 6000 fps) and a backlit optical system capture the fast dynamics of the bubbles as they approach, touch, bounce, or coalesce. Advanced image-analysis routines then identify each event and measure quantities such as coalescence percentage, approach velocity, and coalescence time.
As part of the AURIGA project, the facility is used to characterize ionic-liquid mixtures, enabling controlled experiments that reveal how these fluids influence bubble interactions and coalescence behaviour.
This environment provides accurate, reproducible measurements and supports both fundamental research and the development of reliable models for gas–liquid systems.
Measurement set-up
