Results 11 to 20 of about 5,478,842 (309)

The role of the particle aspect ratio in the discharge of a narrow silo

open access: yesNew Journal of Physics, 2022
The time evolution of silo discharge is investigated for different granular materials made of spherical or elongated grains in laboratory experiments and with discrete element model (DEM) calculations.
Tivadar Pongó   +6 more
doaj   +1 more source

The modeling of free-fall arch formation in granular flow through an aperture

open access: yesFrontiers in Physics, 2022
In this study, to predict the formation of the free-fall arch via granular flow through an aperture, an analytical model has been developed based on the particle-scale force equilibrium. This model calculates the size and location of the meta-stable arch
Yao Tang   +5 more
doaj   +1 more source

Granular flow around a cylindrical obstacle in an inclined chute

open access: yesThe Physics of Fluids, 2022
Shock waves and granular vacua are important phenomena for studying the behavior of granular materials due to the dramatic change in flow properties across shock wave and the particle-free feature at the boundary of granular vacuum. In this paper, we use
X. Cui   +5 more
semanticscholar   +1 more source

New Insights into the Estimation of Impact Load of Granular Flow against a Rigid Wall

open access: yesShock and Vibration, 2022
The installation of a rigid wall is a main approach to mitigate a granular flow. The methods of the impact load against a rigid wall still remains a challenge.
Xiao Siyou, Yang Junwei, Wei Zhongju
doaj   +1 more source

A numerical study on the effects of particle size distribution on run-out distance of granular flow

open access: yesSoils and Foundations, 2022
The discrete element method is a powerful numerical tool widely employed in granular flow simulations. To reduce computational costs, either monodisperse granular models or models with a limited number of particle sizes are used to estimate the risk of ...
D. Watanabe, S. Moriguchi, K. Terada
doaj   +1 more source

Improved evaluation of granular media flows using an X-ray scanning compatible cone-plate setup [PDF]

open access: yesEPJ Web of Conferences, 2021
To understand the typically heterogeneous flowing behavior of granular materials, it is important to combine flow tests with three-dimensional imaging. To probe the flow behavior of granular materials over a wide range of flow rates, it is imperative to ...
Farmani Zohreh   +6 more
doaj   +1 more source

Flow of Wet Granular Materials [PDF]

open access: yesPhysical Review Letters, 2005
Accepted for publication by Physical Review Letters (december 2004)
Huang, N.   +5 more
openaire   +4 more sources

WHERE THE GRANULAR FLOWS BEND [PDF]

open access: yesThe Astrophysical Journal, 2010
Based on IMaX/Sunrise data, we report on a previously undetected phenomenon in solar granulation. We show that in a very narrow region separating granules and intergranular lanes the spectral line width of the Fe I 5250.2 A line becomes extremely small. We offer an explanation of this observation with the help of magneto-convection simulations.
Khomenko, E.   +9 more
openaire   +3 more sources

A unified constitutive model for pressure sensitive shear flow transitions in moderate dense granular materials

open access: yesScientific Reports, 2021
Granular shear flows exhibit complex transitional regimes that are dramatically affected by the pressure level and shear stress state. New advances in granular shear tests at low pressure have enlightened the understanding of the two granular shear flow ...
Xiaohui Cheng   +3 more
doaj   +1 more source

Shallow granular flows

open access: yesPhysical Review E, 2011
Many processes in geophysical and industrial settings involve the flow of granular materials down a slope. In order to investigate the granular dynamics, we report a series of laboratory experiments conducted by releasing grains at a steady rate from a localized source on a rough inclined plane.
Bokhove, O, Thornton, A
openaire   +8 more sources

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