Search Results - subject:"Granular Media"

Self-stabilizing processes in multi-wells landscape in Rd-convergence

Tugaut, Julian - In: Stochastic Processes and their Applications 123 (2013) 5, pp. 1780-1801

Self-stabilizing processes are inhomogeneous diffusions in which the law of the process intervenes in the drift. If the external force is the gradient of a convex potential, it has been proved that the process converges towards the unique invariant probability as the time goes to infinity....

Persistent link: https://www.econbiz.de/10011065013

A new statistical mechanics approach to dense granular media

Tejada, Ignacio G. - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 14, pp. 2664-2677

A new statistical mechanics approach to dense granular media is presented. The thermodynamic formalism is set out … developments). Dense granular media are considered as canonical ensembles of noninteracting clusters, which can be identified with … applied to the simple case of two-dimensional (2D) dense granular media (an arrangement of frictionless monodisperse elastic …

Persistent link: https://www.econbiz.de/10010871998

Impact-induced splash and spill in a quasi-confined granular medium

Ogale, S.B.; Shinde, S.R.; Karve, P.A.; Ogale, Abhijit S.; … - In: Physica A: Statistical Mechanics and its Applications 363 (2006) 2, pp. 187-197

small open container are examined. Different granular media, namely rice, mustard seeds, cream of wheat and plastic beads …

Persistent link: https://www.econbiz.de/10010873224

Electrical conductivity and dielectric permittivity of sphere packings: Measurements and modelling of cubic lattices, randomly packed monosize spheres and multi-size mixtures

Robinson, David A.; Friedman, Shmulik P. - In: Physica A: Statistical Mechanics and its Applications 358 (2005) 2, pp. 447-465

New and literature measurements are compared for the electrical transport properties of densely packed spherical particles. Measurements of electrical conductivity in cubic lattices are presented and were found to agree closely with numerical solutions for the conductivity presented in the...

Persistent link: https://www.econbiz.de/10011058114

One- and two-component fluids: restrictions from the Second Law

Ván, P - In: Physica A: Statistical Mechanics and its Applications 340 (2004) 1, pp. 418-426

What is common in granular materials and quantum mechanics? They can be regarded as weakly nonlocal fluids, with different microstructures and properties. What is the essence of the difference and from where does it come? This is investigated from a uniform thermodynamic point of view.

Persistent link: https://www.econbiz.de/10011060211

A simple model for a transverse dune field

Parteli, E.J.R.; Herrmann, H.J. - In: Physica A: Statistical Mechanics and its Applications 327 (2003) 3, pp. 554-562

We present a simple one-dimensional model to describe the evolution of a transverse dune field. The model is characterized by the distances between the dunes and their heights, which determine the inter-dune sand flux. The model reproduces the observation that the dunes in a given field have...

Persistent link: https://www.econbiz.de/10010590892

Boltzmann-type equation in anelastic case: a convergence result

Grilli, Luca - Dipartimento di Scienze Economiche, Matematiche e … - 2003

collision, is shown. Boltzmann-like equations are often used to model dissipative dynamical systems such as granular media. This …

Persistent link: https://www.econbiz.de/10005265167

Particle banding in rotating fluids: a new pattern-forming system

Lipson, S.G; Seiden, G - In: Physica A: Statistical Mechanics and its Applications 314 (2002) 1, pp. 272-277

During experiments carried out several years ago to grow dendritic crystals while they are levitated in a tube containing rotating supersaturated solution, a curious banding process was observed, in which the crystals were seen to accumulate preferentially in periodic positions within the tube....

Persistent link: https://www.econbiz.de/10010871612

Emergence of order in an oscillated granular layer

Goldman, Daniel I.; Shattuck, M.D.; Swinney, Harry L.; … - In: Physica A: Statistical Mechanics and its Applications 306 (2002) C, pp. 180-188

Our experiments on a vertically oscillated granular layer reveal that spatial patterns emerge in two stages following a change of parameter into the pattern-forming regime: an initial, domain-forming stage and a later stage in which domains coarsen to form ultimately an extended regular pattern....

Persistent link: https://www.econbiz.de/10011057711

SLOW DENSE GRANULAR FLOWS AS A SELF-INDUCED PROCESS

POULIQUEN, OLIVIER; FORTERRE, YOËL; DIZES, STÉPHANE LE - In: Advances in Complex Systems (ACS) 04 (2001) 04, pp. 441-450

A simple model is presented for the description of steady uniform shear flow of granular material. The model is based on a stress fluctuation activated process. The basic idea is that shear between two particle layers induces fluctuations in the media that may trigger a shear at some other...

Persistent link: https://www.econbiz.de/10005047481