Three-dimensional liquid foam flow through a hopper resolved by fast X-ray microtomography
Florian Schott, Benjamin Dollet, Stéphane Santucci, Cyrille Claudet, Médéric Argentina, Christophe Raufaste, Rajmund Mokso
Abstract
divergent. The large statistics and high spatio-temporal resolution allows to observe and quantify the deviations from a purely viscous flow. We indeed reveal an asymmetry between the convergent and divergent flows associated to the emergence of elastic stresses in the latter case, and enhanced as the liquid fraction is reduced. Such effect is related to the reorientation of the deformed bubbles flowing out of the constriction, from a prolate to an oblate shape in average, while they pass through the hopper waist.
Topics & Concepts
RheologyX-ray microtomographyMaterials scienceConical surfaceFlow (mathematics)ConstrictionComposite materialMechanicsOpticsPhysicsMedicineEndocrinologyPickering emulsions and particle stabilizationHeat and Mass Transfer in Porous MediaEnhanced Oil Recovery Techniques