Segregation induced by inelasticity in a vibrofluidized granular mixture

Thumbnail Image
Full text at PDC
Publication Date
Advisors (or tutors)
Journal Title
Journal ISSN
Volume Title
American Physical Society
Google Scholar
Research Projects
Organizational Units
Journal Issue
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.
© 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.
UCM subjects
Unesco subjects
1. A. Rosato, K. J. Strandburg, F. Prinz, and R. H. Swendsen, Phys. Rev. Lett. 58, 1038 (1987). 2. A. P. J. Breu, H.-M. Ensner, C. A. Kruelle, and I. Rehberg, Phys. Rev. Lett. 90, 014302 (2003). 3. A. Kudrolli, Rep. Prog. Phys. 67, 209 (2004). 4. D. A. Huerta and J. C. Ruiz-Suárez, Phys. Rev. Lett. 92, 114301 2004; 93, 069901E (2004). 5. M. Schröter, S. Ulrich, J. Kreft, J. B. Swift, and H. L. Swinney, Phys. Rev. E 74, 011307 (2006). 6. D. V. Kharkar, J. J. McCarthy, and J. M. Ottino, Chaos 9, 594 (1999). 7. P. M. Reis and T. Mullin, Phys. Rev. Lett. 89, 244301 (2002). 8. M. P. Ciamarra, A. Coniglio, and M. Nicodemi, Phys. Rev. Lett. 94, 188001 (2005). 9. T. Schnautz, R. Brito, C. A. Kruelle, and I. Rehberg, Phys. Rev. Lett. 95, 028001 (2005). 10. H. A. Makse, S. Havlin, P. R. King, and H. E. Stanley, Nature London 386, 379 (1997). 11. K. M. Hill and J. Kakalios, Phys. Rev. E 49, R3610 (1994). 12. D. A. Sanders, M. R. Swift, R. M. Bowley, and P. J. King, Phys. Rev. Lett. 93, 208002 (2004). 13. L. T. Lui, Michael R. Swift, R. M. Bowley, and P. J. King, Phys. Rev. E 75, 051303 (2007). 14. L. Kondic, R. R. Hartley, S. G. K. Tennakoon, B. Painter, and R. P. Behringer, Europhys. Lett. 61, 742 (2003). 15. D. Serero, I. Goldhirsch, S. H. Noskowick, and M.-L. Tan, J. Fluid Mech. 554, 237 (2006), the case of different restitution coefficients is treated in Sec. 5.1. 16 J. J. Brey, M. J. Ruiz-Montero, and F. Moreno, Phys. Rev. E 73, 031301 (2006). 17. R. D. Wildman and D. J. Parker, Phys. Rev. Lett. 88, 064301 (2002). 18. K. Feitosa and N. Menon, Phys. Rev. Lett. 88, 198301 (2002). 19. D. Paolotti, C. Cattuto, U. Marini Bettolo Marconi, and A. Puglisi, Granular Matter 5, 75 (2003). 20. V. Garzó, Europhys. Lett. 75, 521 2006; e-print arXiv: 0803.2588. 21. R. Soto, Phys. Rev. E 69, 061305 (2004). 22. E. L. Grossman, T. Zhou, and E. Ben-Naim, Phys. Rev. E 55, 4200 (1997). 23. R. Ramírez and R. Soto, Physica A 322, 73 (2003). 24. Ph. A. Martin and J. Piasecki, Europhys. Lett. 46, 613 (1999). 25. A. Barrat, E. Trizac, Granular Matter 4, 57 (2002). 26. B. Meerson, T. Pöschel, and Y. Bromberg, Phys. Rev. Lett. 91, 024301 (2003). 27. I. Pagonabarraga, E. Trizac, T. P. C. van Noije, and M. H. Ernst, Phys. Rev. E 65, 011303 (2001). 28. J. Kolafa, S. Labík, and A. Malijevský, Phys. Chem. Chem. Phys. 6, 2335 (2004); see also software/hsmd/ for molecular dynamics results of gr. 29. J. F. Lutsko, Phys. Rev. E 63, 061211 (2001). 30. L. Verlet and D. Levesque, Mol. Phys. 46, 969 (1982). 31. N. F. Carnahan and K. E. Starling, J. Chem. Phys. 51, 635 (1969). 32. I. Goldhirsch and G. Zanetti, Phys. Rev. Lett. 70, 1619 (1993).