Results 21 to 30 of about 7,738 (263)

The flow of granular magnesia

open access: yesJournal of Pharmacy and Pharmacology, 1966
AbstractInvestigations of the flow rates of loosely packed magnesia have shown that the general equation developed by Jones & Pilpel (1966)can be applied to single component and multicomponent mixtures in the size range 0·003 to >0·2 cm. The increase in flow rate caused by mixing coarse and fine particles has been related quantitatively to ...
T M, Jones, N, Pilpel
openaire   +2 more sources

Influence of direction and rate of removal of confining gate in DEM based granular column simulations mimicking dry granular flows [PDF]

open access: yesEPJ Web of Conferences
Dry granular flows exhibit varied complex attributes based on the failure characteristics of natural slopes. However, for simplistic understanding of these flows, lab scale granular column collapse experiments are being widely followed, and while ...
Ujjwal Aman   +3 more
doaj   +1 more source

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

Time scales and rheology of visco-cohesive granular flows [PDF]

open access: yesEPJ Web of Conferences, 2021
In the presence of viscous and cohesive interactions between particles, a granular flow is governed by several characteristic time and stress scales that determine its rheological properties (shear stress, packing fraction, effective viscosities).
Radjai Farhang
doaj   +1 more source

Secondary flows in slow granular flows

open access: yesEPJ Web of Conferences, 2017
Recent findings by Krishnaraj and Nott [1] show that a granular material sheared in a cylindrical Couette cell at low shear rates forms a single secondary vortex.
Dsouza Peter Varun   +2 more
doaj   +1 more source

Effects of flow regimes on the interaction between granular flow and flexible barrier

open access: yesPLoS ONE, 2023
Flexible barriers are widely used to mitigate granular flows. In practice, flow regimes may keep changing along a flow path after the initiation of granular flows.
Siyou Xiao   +5 more
doaj  

Failure mechanism of two-dimensional granular columns: Numerical simulation and experiments

open access: yesVietnam Journal of Mechanics, 2015
In this article, two typical experiments for two types of destruction of granular column were performed by 2D soil model. High speed camera was used to record the movements of the destruction of the granular column.
Nguyen Tien Cuong   +2 more
doaj   +1 more source

Gravity-driven wet granular free-surface flows down an inclined plane: Effects of the inclination angle

open access: yesVietnam Journal of Mechanics, 2022
Wet granular materials flowing down an inclined plane are omnipresent in multi-field engineering. Although extensive research has been carried out to investigate the flowability of such flows, our understanding of the flows like landslides is limited
Thanh-Trung Vo   +2 more
doaj   +1 more source

Granular Flows in Fluid

open access: yes, 2012
Underwater avalanches are a major risk to offshore structures. The mechanisms involved in the initiation and propagation of underwater granular avalanches are complex. They depend mainly on the slope angle, density, and quantity of material destabilised.
Kumar, Krishna   +2 more
openaire   +2 more sources

Momentum transport in granular flows

open access: yesComputers & Mathematics with Applications, 2008
We investigate the error induced by only considering binary collisions in the momentum transport of hard-sphere granular materials, as is done in kinetic theories. In this process, we first present a general microscopic derivation of the momentum transport equation and compare it to the kinetic theory derivation, which relies on the binary collision ...
Gregg Lois   +2 more
openaire   +2 more sources

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