Results 251 to 260 of about 5,478,842 (309)
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Numerical investigation of the mechanism of granular flow impact on rigid control structures
Acta Geotechnica, 2021Edward Yang +6 more
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Theories and Applications of CFD–DEM Coupling Approach for Granular Flow: A Review
Archives of Computational Methods in Engineering, 2021M. Elemam +5 more
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Creeping motion in granular flow
Physical Review E, 2005The core of a quasi-two-dimensional rotating cylinder filled more than half full with glass beads rotates slightly faster than the cylinder itself and decreases in radius over time. Core precession depends linearly on the number of tumbler revolutions while core erosion varies logarithmically.
Benjamin A, Socie +4 more
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Unsteady Couette granular flows
Physics of Fluids, 1997Unsteady Couette granular flows are investigated both theoretically and by the means of the discrete element method (DEM). Theoretical formulation of the problem is based on the kinetic theory for smooth, nearly elastic particles. The resulting boundary value problem is solved numerically for two particular types of flows: (a) transient Couette flows ...
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Scales and kinetics of granular flows
Chaos: An Interdisciplinary Journal of Nonlinear Science, 1999When a granular material experiences strong forcing, as may be the case, e.g., for coal or gravel flowing down a chute or snow (or rocks) avalanching down a mountain slope, the individual grains interact by nearly instantaneous collisions, much like in the classical model of a gas.
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Experimental investigation of mobility and deposition characteristics of dry granular flow
Landslides, 2021F. Yu, L. Su
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The dynamics of granular flow in an hourglass
Granular Matter, 2001We present experimental investigations of flow in an hourglass with a slowly narrowing elongated stem. The primary concern is the interaction between grains and air. For large grains the flow is steady. For smaller grains we find a relaxation oscillation (ticking) due to the counterflow of air, as previously reported by Wu et al. [Phys. Rev. Lett.
Veje, Christian, Dimon, Peter
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Shear instabilities in granular flows
Nature, 2002Unstable waves have been long studied in fluid shear layers. These waves affect transport in the atmosphere and oceans, in addition to slipstream stability behind ships, aeroplanes and heat-transfer devices. Corresponding instabilities in granular flows have not been previously documented, despite the importance of these flows in geophysical and ...
David J, Goldfarb +2 more
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On the stability of rapid granular flows
Journal of Fluid Mechanics, 1993Numerical simulations of rapid granular flows in large periodic domains have demonstrated the existence of an ‘inelastic microstructure’ characterized by agglomerations of particles into clusters. In the present work the phenomenon of particle clustering is considered to be a manifestation of hydrodynamic instability of the equations governing the ...
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