scholarly journals Dense granular flow of mixtures of spheres and dumbbells down a rough inclined plane: Segregation and rheology

2019 ◽  
Vol 31 (2) ◽  
pp. 023304 ◽  
Author(s):  
Sandip Mandal ◽  
D. V. Khakhar
Keyword(s):  
Granular Flow ◽  
Inclined Plane ◽  
Dense Granular Flow

scholarly journals Application of the compressible -dependent rheology to chute and shear flow instabilities

2019 ◽  
Vol 864 ◽  
pp. 1026-1057 ◽  
Author(s):  
J. S. Fannon ◽  
I. R. Moyles ◽  
A. C. Fowler
Keyword(s):  
Granular Flow ◽  
Volume Fraction ◽  
Shear Instability ◽  
Qualitative Behaviour ◽  
Inclined Plane ◽  
Plane Shear ◽  
Hydrodynamical Description ◽  
Dense Granular Flow ◽  
Discrete Element Simulations ◽  
Better Than

We consider the instability properties of dense granular flow in inclined plane and plane shear geometries as tests for the compressible inertial-dependent rheology. The model, which is a recent generalisation of the incompressible $\unicode[STIX]{x1D707}(I)$ rheology, constitutes a hydrodynamical description of dense granular flow which allows for variability in the solids volume fraction. We perform a full linear stability analysis of the model and compare its predictions to existing experimental data for glass beads on an inclined plane and discrete element simulations of plane shear in the absence of gravity. In the case of the former, we demonstrate that the compressible model can quantitatively predict the instability properties observed experimentally, and, in particular, we find that it performs better than its incompressible counterpart. For the latter, the qualitative behaviour of the plane shear instability is also well captured by the compressible model.

Ordered/disordered monodisperse dense granular flow down an inclined plane: dry versus wet media in the capillary bridge regime

2021 ◽  
Vol 23 (3) ◽  
Author(s):  
Halimeh Moharamkhani ◽  
Reza Sepehrinia ◽  
Mostafa Taheri ◽  
Morteza Jalalvand ◽  
Martin Brinkmann ◽  
...  
Keyword(s):  
Granular Flow ◽  
Inclined Plane ◽  
Capillary Bridge ◽  
Dense Granular Flow

The hard-particle model for a dense granular flow down an inclined plane

2010 ◽  
Author(s):  
V. Kumaran ◽  
Joe Goddard ◽  
Pasquale Giovine ◽  
James T. Jenkins
Keyword(s):  
Granular Flow ◽  
Particle Model ◽  
Hard Particle ◽  
Inclined Plane ◽  
Dense Granular Flow

A Convex Complementarity Approach for Simulating Large Granular Flows

2010 ◽  
Vol 5 (3) ◽  
Author(s):  
Alessandro Tasora ◽  
Mihai Anitescu
Keyword(s):  
Granular Flow ◽  
Complementarity Problems ◽  
Particle Interaction ◽  
Granular Flows ◽  
Rigid Bodies ◽  
Integration Time ◽  
Frictional Contacts ◽  
Physical Experiments ◽  
Dense Granular Flow ◽  
Number Of Particles

Aiming at the simulation of dense granular flows, we propose and test a numerical method based on successive convex complementarity problems. This approach originates from a multibody description of the granular flow: all the particles are simulated as rigid bodies with arbitrary shapes and frictional contacts. Unlike the discrete element method (DEM), the proposed approach does not require small integration time steps typical of stiff particle interaction; this fact, together with the development of optimized algorithms that can run also on parallel computing architectures, allows an efficient application of the proposed methodology to granular flows with a large number of particles. We present an application to the analysis of the refueling flow in pebble-bed nuclear reactors. Extensive validation of our method against both DEM and physical experiments results indicates that essential collective characteristics of dense granular flow are accurately predicted.

scholarly journals Granular flow down an inclined plane: Bagnold scaling and rheology

2001 ◽  
Vol 64 (5) ◽  
Author(s):  
Leonardo E. Silbert ◽  
Deniz Ertaş ◽  
Gary S. Grest ◽  
Thomas C. Halsey ◽  
Dov Levine ◽  
...  
Keyword(s):  
Granular Flow ◽  
Inclined Plane
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