Zobrazeno 1 - 10
of 126
pro vyhledávání: '"Halsey, Thomas A."'
Avalanche behavior of gravitationally-forced granular layers on a rough inclined plane are investigated experimentally for different materials and for a variety of grain shapes ranging from spherical beads to highly anisotropic particles with dendrit
Externí odkaz:
http://arxiv.org/abs/0803.4450
Publikováno v:
Phys. Rev. E 74, 051302 (2006)
We report numerical results for velocity correlations in dense, gravity-driven granular flow down an inclined plane. For the grains on the surface layer, our results are consistent with experimental measurements reported by Pouliquen. We show that th
Externí odkaz:
http://arxiv.org/abs/cond-mat/0608641
Autor:
Halsey, Thomas C., Ertas, Deniz
We present a theoretical derivation of a rheology for dense granular flow, based on the process of inelastic collapse of neighboring particles. This collapse creates regions of correlated motion, which control the viscous behavior of the flow on a la
Externí odkaz:
http://arxiv.org/abs/cond-mat/0506170
We report experimental measurements of avalanche behavior of thin granular layers on an inclined plane for low volume flow rate. The dynamical properties of avalanches were quantitatively and qualitatively different for smooth glass beads compared to
Externí odkaz:
http://arxiv.org/abs/cond-mat/0504312
We study the shape and growth rate of necks between sintered spheres with dissolution-precipitation dynamics in the reaction-limited regime. We determine the critical shape that separates those initial neck shapes that can sinter from those that nece
Externí odkaz:
http://arxiv.org/abs/cond-mat/0308121
We address the surface tension-driven dynamics of porous media in nearly saturated pore-space solutions. We linearize this dynamics in the reaction-limited regime near its fixed points -- surfaces of constant mean curvature (CMC surfaces). We prove t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0210503
Autor:
Ertas, Deniz, Halsey, Thomas C.
Inelastic grains in a flow under gravitation tend to collapse into states in which the relative normal velocities of two neighboring grains is zero. If the time scale for this gravitational collapse is shorter than inverse strain rates in the flow, w
Externí odkaz:
http://arxiv.org/abs/cond-mat/0206046
We measure how strong, localized contact adhesion between grains affects the maximum static critical angle, theta_c, of a dry sand pile. By mixing dimer grains, each consisting of two spheres that have been rigidly bonded together, with simple spheri
Externí odkaz:
http://arxiv.org/abs/cond-mat/0111311
We study static packings of frictionless and frictional spheres in three dimensions, obtained via molecular dynamics simulations, in which we vary particle hardness, friction coefficient, and coefficient of restitution. Although frictionless packings
Externí odkaz:
http://arxiv.org/abs/cond-mat/0111140
Autor:
Halsey, Thomas C.
Diffusion-limited aggregation has a natural generalization to the "$\eta$-models", in which $\eta$ random walkers must arrive at a point on the cluster surface in order for growth to occur. It has recently been proposed that in spatial dimensionality
Externí odkaz:
http://arxiv.org/abs/cond-mat/0105047