INVESTIGADORES
UÑAC Rodolfo Omar
artículos
Título:
Tilting process with humidity: DEM modelling and comparison with experiments
Autor/es:
L. OGER; A. M. VIDALES; R. O. UÑAC; I. IPPOLITO
Revista:
GRANULAR MATTER
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2013 vol. 15 p. 629 - 643
ISSN:
1434-7636
Resumen:
Granular matter is present everywhere 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 well known 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 discrete element methods ?spring-
Dashpot? with soft model. Firstly, we check the ability of our
code to handle tilting experiments, then, an extra adhesion
term linked to the humidity rate is added. Full comparison
between ?dry? case and humid case is done.