RT Journal Article
T1 Segregation induced by inelasticity in a vibrofluidized granular mixture
A1 Enriquez, H.
A1 Godoy, S.
A1 Soto, R.
A1 Brito López, Ricardo
AB We investigate the segregation of a dense binary mixture of granular particles that only differ in their restitution coefficient. The mixture is vertically vibrated in the presence of gravity. We find a partial segregation of the species, where most dissipative particles submerge in the less dissipative ones. The segregation occurs even if one type of the particles is elastic. In order to have a complete description of the system, we study the structure of the fluid at microscopic scale (few particle diameters). The density and temperature pair distribution functions show strong enhancements with respect to the equilibrium ones at the same density. In particular, there is an increase in the probability that the more inelastic particles group together in pairs (microsegregation). Microscopically the segregation is buoyancy driven, by the appearance of a dense and cold region around the more inelastic particles.
PB American Physical Society
SN 1539-3755
YR 2008
FD 2008-06
LK https://hdl.handle.net/20.500.14352/50631
UL https://hdl.handle.net/20.500.14352/50631
LA eng
NO © American Physical Society. We want to thank J. M. R. Parrondo for very useful comments. R.B. was supported by the Spanish Projects MOSAICO, Contract Nos. FIS2004-271 and UCM/PR34/07-15859. The research was supported by Fondecyt Grant Nos. 1061112, 1070958, and 7070301 and Fondap Grant No. 11980002.
NO Spanish Projects MOSAICO
NO Fondecyt
NO Fondap
DS Docta Complutense
RD 9 may 2025