Sommaire:

The description of the flow of granular media still represents a challenge due to the difficulty in writing constitutive laws. However, recent advances have shown that a simple hydrodynamical description based on a frictional visco-plastic law may help in understanding the properties of granular flows. In this talk, the successes and limits of this continuum description will be discussed, before revisiting the classical problem of the drag and lift forces experienced by an object moving in a granular medium. It will be shown that the peculiar rheology of granular media leads to striking behaviours when a cylinder is dragged through a packing of grains.

Pour plus d'informations, merci de contacter Berthier L.