freely evolving granular gas
(1 million particles!)
Vibrated knots
(pictures,
data)
Entropic tightening
Clustering in granular gases
Phase transitions in vibrated monolayers
Large scale MD simulations
Granular Media Studies at CNLS
Granular media consists of macroscopically-sized solid particles. Nevertheless, they exhibit rich and interesting behavior which defies conventional fluid/gas/solid classification. Experiments show size segregation, pattern formation, arches and chains and cooperative motion. At CNLS our aim is improving the theoretical description of dynamic and static properties of granular media.
Research
People
- Eli Ben-Naim
- Robert Ecke
- Zahir Daya
- Matthew Hastings
- Charles Reichhardt
- Cynthia Olson
- Gary Doolen
- Shiyi Chen (JHU/LANL)
- Xiaobo Nie (JHU/LANL)
- Paul Krapivsky (BU)
- Sidney Redner (BU)
- Peter Vorobieff (UNM/LANL)
Organizations
- T (Theoretical) Division, LANL
- T-13 (Complex Systems)
- T-3 (Fluid Dynamics)
- Materials Science and Technology), LANL
- MST-10 (Condensed Matter and Thermal Physics)
- X-3 (Hydrodynamic Methods)
CNLS Research Highlights
- Knots and Random Walks in "Granular Polymers" ,
Z.A. Daya. article (with movies) LA-UR-01-2500
Publications
- The Inelastic Maxwell Model,
- Spontaneous spirals in vibrated granular chains,
- Dynamics of Freely Cooling Granular Gases
- Impurity in a Maxwellian Unforced Granular Fluid
- Scaling, Multiscaling, and Nontrivial Exponents in Inelastic Collision Processes
- Nontrivial Velocity Distributions in Inelastic Gases
- Entropic Tightening of Vibrated Chains
- Knots and Random Walks in Vibrated Granular Chains
- Dynamics of Vibrated Granular Monolayers
- Multiscaling in Inelastic Collisions
- Shock Like Dunamics of Inelastic Gases
- Clustering kinetics of granular media in three dimensions
- Slow relaxation in granular compaction,
- Density fluctuations in vibrated granular materials,
- Towards granular hydrodynamics in two-dimensions,
- Studies of granular compaction,
- Collective properties of adsorption-desorption processes,
E. Ben-Naim and P.L.Krapivsky,
Proceeding of CECAM 2002 conference "Granular Gases", submitted. cond-mat/0301238 [abs, src, ps, pdf].
R.E. Ecke, Z.A. Daya, M.K.Rivera, and E. Ben-Naim
Proceeding of MRS 02 Fall meeting, submitted. cond-mat/0212107 [abs, src, ps, pdf].
X. Nie, E. Ben-Naim, and S.Y. Chen
Phys. Rev. Lett. 89, 204301 (2002) cond-mat/0209412 LA-UR-02-3947 [abs, src, ps, pdf]
E. Ben-Naim and P.L. Krapivsky
Eur. Phys. Jour. E 8, 507 (2002) cond-mat/0203099 LA-UR-02-1304 [abs, src, ps, pdf]
E. Ben-Naim and P.L. Krapivsky
Phys. Rev. E, 66, 011309 (2002) cond-mat/0202332 LA-UR-02-907 [abs, src, ps, pdf]
P. L. Krapivsky and E. Ben-Naim
J. Phys. A 35, L147 (2002). cond-mat/0111044 LA-UR-01-6305 [abs, src, ps, pdf]
M. B. Hastings, Z. A. Daya, E. Ben-Naim, and R. E. Ecke
Phys. Rev. E, 66, 025102 (2002) cond-mat/0110612 LA-UR-01-6893 [abs, src, ps, pdf]
E. Ben-Naim, Z.A. Daya, P. Vorobieff, and R.E. Ecke
Phys. Rev. Lett 86, 1414 (2001) cond-mat/0012145 LA-UR-00-3074 [abs, src, ps, pdf]
X. Nie, E. Ben-Naim, and S.Y. Chen
Europhys. Lett. 51, 679 (2000) cond-mat/9910371 LA-UR-99-6069 [abs, src, ps, pdf].
E.Ben-Naim and P.L. Krapivsky
Phys. Rev. E 61, R5 (2000) cond-mat/9909176 LA-UR-99-5579. [abs, src, ps, pdf].
E.Ben-Naim, S.Y. Chen, G. D. Doolen, and S. Redner
Phys. Rev. Lett 83, 4069 (1999) cond-mat/9909354 LA-UR-99-4098. [abs, src, ps, pdf].
S.Chen, Y. Deng, X. Nie, and Y. Tu
cond-mat/9804235 Phys. Lett. A, 269 218 (2000).
E.Ben-Naim, J.B.Knight, E.R.Nowak, H.M.Jaeger, and S.R. Nagel,
Physica D, 123, 380 (1998)cond-mat/9603150 LA-UR-97-2604. [abs, src, ps, pdf].
E.R.Nowak, J.B.Knight, E.Ben-Naim, H.M.Jaeger, and S.R. Nagel,
Phys. Rev. E 57, 1971 (1998) LA-UR-97-2445. [ps, pdf]
E.L.Grossman, T.Zhou, and E.Ben-Naim
Phys. Rev. E 55, 4200 (1997) cond-mat/9607165 LA-UR-96-4519. [abs, src, ps, pdf].
E.R.Nowak, J.B.Knight, E.Ben-Naim, M.Povinelli, H.M.Jaeger, and S.R.Nagel,
``Powders and Grains 1997'' 377 (1997).
P.L.Krapivsky and E.Ben-Naim,
J. Chem. Phys.100, 6778 (1994) cond-mat/9310065 [abs, src, ps, pdf].