Scaling properties of granular rheology near the jamming transition

Details Scaling properties of granular rheology near the jamming transition Scaling properties of granular rheology near the jamming transition

2008-03-15

arxiv.org/abs/0803.2296v4

J. Phys. Soc. Jpn. 77 (2008) 123002

Physics

Condensed Matter

Soft Condensed Matter

v2. Some minor comments are added. v3. & v.4 Numerical accuracy is improved

Scientific paper

10.1143/JPSJ.77.123002

Rheological properties of a dense granular material consisting of frictionless spheres are investigated. It is found that the shear stress, the pressure, and the kinetic temperature obey critical scaling near the jamming transition point, which is considered as a critical point. These scaling laws have some peculiar properties in view of conventional critical phenomena because the exponents depend on the interparticle force models so that they are not universal. It is also found that these scaling laws imply the relation between the exponents that describe the growing correlation length.

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