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Precursory arch-like structures explain the clogging probability in a granular hopper flow
The clogging phenomenon finds extensive application in both industrial processes and daily life events. While this broad spectrum of application...
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Critical numerical analysis of quasi-two-dimensional silo-hopper discharging
We present a critical comparative analysis between numerical and experimental results of quasi-two-dimensional silo and hopper flows. In our...
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Beverloo law for hopper flow derived from self-similar profiles
We use particle simulations to investigate the mass flow in two-dimensional hopper flow and to analyze the dependency of the flow rate with the...
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Transition of granular flow patterns in a conical hopper based on superquadric DEM simulations
Granular flow exists widely in nature or industrial production, and particle shape is a crucial factor affecting the flow characteristics of granular...
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Jamming probability of granular flow in 3D hopper with shallow columns: DEM simulations
We performed a numerical study of the jamming that stops the flow of granular material from a three-dimensional hopper discharging due to gravity....
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The role of the hopper angle in silos: experimental and CFD analysis
AbstractIn this work, we reported experimental and numerical results of granular flows in silos and hoppers. We used a very flexible experimental...
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Laboratory investigation of dry granular flow through an opening
Granular flow is a scientific problem with applications in many engineering problems such as sinkholes, ground surface collapse, and soil loss into a...
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On the use of magnetic particles to enhance the flow of vibrated grains through narrow apertures
The flow of grains through narrow apertures possess an extraordinary challenge: clogging. Strategies to alleviate the effect of clogging, such as the...
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Experimental study on the mechanism of flow blockage formation in fast reactor
Various sources of solid particles might exist in the coolant flow of a liquid metal cooled fast reactor (e.g., through chemical interaction between...
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Average outpouring velocity and flow rate of grains discharged from a tilted quasi-2D silo
AbstractThe flow of granular materials through constricted openings is important in many natural and industrial processes. These complex...
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CFD-DEM coupled calculation of entrained air and particles movement characteristics during particles flow impacting the wall process
The bulk materials loading and unloading process is common in industrial plants. In order to understand the dust generation mechanism, a physical...
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Kinematics of the discharge of flat particles from model silos
AbstractThe present work aims at two main objectives: validation of former equations developed for predicting the discharge flow of particles from...
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A GPU-based DEM framework for simulation of polyhedral particulate system
The contact overlap algorithms and contact models of both polyhedron-polyhedron and polyhedron-boundary contact in discrete element method (DEM) has...
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Effect of gas permeation and consolidation stress evolution on powder flow properties in the gas pressurization process
Gas permeation and consequent powder consolidation during gas pressurization process easily cause deterioration of powder flowability. The effects of...
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Understanding the local flow rate peak of a hopper discharging discs through an obstacle using a Tetris-like model
Placing a round obstacle above the orifice of a flat hopper discharging uniform frictional discs has been experimentally and numerically shown in the...
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Investigation of the interaction of particulate matter and its separation from the gas flow in a multi-channel cyclone with recirculation
The deposition of ultrafine particulate matter (UFPM) in the gas flow in the channel occurs as they settle due to adhesion and under the influence of...
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Flow behaviors of ellipsoidal suspended particles in porous reservoir rocks using CFD-DEM combined with multi-element particle model
The flow behaviors of suspended particles and pore fluids in porous reservoir rocks have attracted much attention in the fields of oil drilling and...
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Fluid effects in model granular flows
Pore fluid plays a crucial role in many granular flows, especially those in geophysical settings. However, the transition in behaviour between dry...
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Periodic instationarities of granular flows in conical hoppers
Granular flows through converging sections such as conical hoppers have been reported to be submitted to instationarities, which in certain...
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Influence of grain discharge rate on the normal force of arch
AbstractThe arch stress of grain particles during the discharge of the silo is very important to the safety of the silo. At present, most silos adopt...
