Domaines
Soft matter
Physics of liquids
Kinetic theory ; Diffusion ; Long-range interacting systems
Hydrodynamics/Turbulence/Fluid mechanics
Type of internship
Expérimental Description
Particle-laden interfaces are ubiquitous in natural environment and industries (e.g. stabilizing foams or emulsions, filtration processes, armored drops used as microreactors or prevent sloshing. Due to their countless applications numerous studies have been devoted to understanding the mechanical behavior of particle laden interfaces. This peculiar material belongs to the global class of attractive granular material. As for free granular material their rheology is non-local and when submitted to shear, a shear band develops separating an inertial zone from a quasi-static one. Preliminary experiments conduct at FAST on granular soap films have shown that, in oscillatory shear, contrary to free granular material, the localization of the shear band in the cell depends on the oscillation frequency. This observation suggests an elastic origine of the position of the shear localization. The goal of the internship is to study the different flow regime and the shear localization for different soap film elastic properties and surface viscosities.
Contact
Georges GAUTHIER