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UMR 5672

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You are here: Home / Seminars / Experimental physics and modelling / Capillary dynamics in frictional fluids

Capillary dynamics in frictional fluids

Guillaume Dumazer (Centre SPIN, Mines Saint-Etienne)
When Nov 21, 2023
from 11:00 to 12:00
Where Salle des thèses
Attendees Guillaume Dumazer
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When granular matter is immersed in a two-fluid phases system, the complete mechanical coupling between fluid and granular phases is controlled by viscous dissipation and solid friction. Capillary forces at the interface between the two fluid phases also play an important role in such systems. The combination of these physical ingredients can be found in a large variety of industrial processes handling granular matter as well as in several geological natural processes.

I will present some research works attempting to provide clarified descriptions of capillary dynamics in frictional fluids, leading to surprising pattern formations and counter-intuitive dynamics. In particular, the dynamics of a frictional interface in a millifluidic tube will be presented. I will focus on the transition between interface displacement regimes selecting either solid friction or viscous dissipation.