Transport of granular media

OGER, L.; VIDALES, A M; UÑAC, R.O.; BENITO, J.G.; IPPOLITO, I.

Paris

Jornada; Jornadas Franco-Argentinas de la cooperación científica para la innovación Buenos Aires/París - París/Buenos Aires.; 2014

Cancillería Argentina en Francia y Embajada Francesa en Argentina

Granularmatter is present every where in our practical lives and mostly used in natural environment(i.e.classical atmospheric conditions).This fact implies that the humidity rate which controls the water content can be involved in their behaviors. Especially adhesion forces between grains are linked to this humidity rate. Here we study a wellknown experiment defined as a laboratory test for avalanches.We continuously tilt a box filled with grains up to the appearance of precursors and full avalanches.These avalanches are directly proportional to the forces acting at the contact level between grains.We use a numerical approach based on the classical DiscreteElementMethods(DEM)`spring-Dashpot' with soft model with an extra adhesion term linked to the humidity rate is added.