Boundary effects for Couette flow of granular materials: dynamical modelling
Xiaoming Zheng,James M. Hill +1 more
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TLDR
In this paper, boundary effects for simple Couette flow of granular materials using a dynamical modelling method are examined. But the exact relationship is by no means clear because of the unknown slip at the boundary.About:
This article is published in Applied Mathematical Modelling.The article was published on 1996-01-01 and is currently open access. It has received 11 citations till now. The article focuses on the topics: Boundary layer thickness & Boundary value problem.read more
Citations
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Force Chain Evolution and Force Characteristics of Shearing Granular Media in Taylor-Couette Geometry by DEM
TL;DR: In this paper, the authors simulate the Taylor-Couette shear model by using the discrete element method to study mechanical properties and force chain changes in the granular flow in friction pair clearance.
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Density waves in gravity-driven granular flow through a channel
TL;DR: In this paper, a molecular-dynamic computer simulation is used to examine rapid granular flow in a vertical channel and two distinct types of density waves are identified: an S-shaped wave and a clump.
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Molecular dynamics simulation of granular flows: Slip along rough inclined planes
Xiaoming Zheng,James M. Hill +1 more
TL;DR: In this paper, the authors employ a molecular dynamics simulation technique to model the flow of a granular material down a rough inclined plane, with attention being focused on the effect of the boundary roughness and the angle of inclination of the plane.
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Mixing of granular materials. Part I: Effect of periodic shear
TL;DR: In this article, a low shear mixing device consisting of a box with two moving walls and three static walls was developed to study granular mixing, and experiments at different wall velocities and wall displacements were run to obtain an in depth understanding of the internal behavior of granular materials in three dimensions.
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Couette flow of granular materials
TL;DR: In this paper, the flow of granular materials between rotating cylinders is studied using a continuum model proposed by Rajagopal and Massoudi (A method for measuring material moduli for granular material: flow in an orthogonal rheometer, DOE/PETC/TR90/3, 1990).
References
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Book
Computer Simulation of Liquids
Michael P. Allen,D. J. Tildesley +1 more
TL;DR: In this paper, the gear predictor -corrector is used to calculate forces and torques in a non-equilibrium molecular dynamics simulation using Monte Carlo methods. But it is not suitable for the gear prediction problem.
Journal Article
Discrete numerical model for granular assemblies.
Peter Cundall,Otto D. L. Strack +1 more
TL;DR: The distinct element method as mentioned in this paper is a numerical model capable of describing the mechanical behavior of assemblies of discs and spheres and is based on the use of an explicit numerical scheme in which the interaction of the particles is monitored contact by contact and the motion of the objects modelled particle by particle.
Journal ArticleDOI
Self-organized criticality: An explanation of the 1/ f noise
TL;DR: It is shown that dynamical systems with spatial degrees of freedom naturally evolve into a self-organized critical point, and flicker noise, or 1/f noise, can be identified with the dynamics of the critical state.
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Self-organized criticality
TL;DR: In this article, the authors show that certain extended dissipative dynamical systems naturally evolve into a critical state, with no characteristic time or length scales, and the temporal fingerprint of the self-organized critical state is the presence of flicker noise or 1/f noise; its spatial signature is the emergence of scale-invariant (fractal) structure.
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Kinetic theories for granular flow: inelastic particles in Couette flow and slightly inelastic particles in a general flowfield
TL;DR: In this paper, the authors studied the flow of an idealized granular material consisting of uniform smooth, but nelastic, spherical particles using statistical methods analogous to those used in the kinetic theory of gases.