Computer simulations of critical, non-stationary granular flow through a hopper

Kohring, G.A.; Melin, Solveig; Puhl, H.; Tillemans, Hans-Jürgen; Vermöhlen, Wolfgang

doi:10.1016/0045-7825(94)00743-7

Cited by 62 publications

(19 citation statements)

References 4 publications

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“…They showed that for A = 0:2 and large n the discharge rate is reduced by about 30%. Kohring et al (1995) simulated non-spherical particles owing through a hopper. Four ow regimes were applied in this simulation depending upon the rate of particles owing into the hopper.…”

Section: Non-spherical Particles In the Literaturementioning

confidence: 99%

Distinct element modelling of non-spherical frictionless particle flow

Langston

Al-Awamleh

Fraige

et al. 2004

Chemical Engineering Science

178

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Section: Non-spherical Particles In the Literaturementioning

confidence: 99%

Distinct element modelling of non-spherical frictionless particle flow

Langston

Al-Awamleh

Fraige

et al. 2004

Chemical Engineering Science

178

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“…And little information on the non-spherical particles has been reported yet. Kohring et al [6] simulated non-spherical particles flow through a hopper. Li et al [7] compared the flow behavior between the disc-like particles and spherical particles using the discrete element method.…”

Section: Introductionmentioning

confidence: 99%

Discrete element method modeling of corn-shaped particle flow in rectangular hopper

Jin

Wang

et al. 2010

Front. Archit. Civ. Eng. China

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Discrete element method (DEM) was developed to simulate the corn-shaped particles flow in the hopper. The corn-shaped particle was described by four overlapping spheres. Contact force and gravity force were considered when establishing the model. In addition, flowing characteristic of particles in the hopper was studied. The effect of friction coefficient on the wall pressure, voidage and velocity distribution was analyzed. The results show that the discharge rate decreases with the friction coefficient increasing; and the "over-pressure" phenomenon occurs in the discharging process for two different friction coefficients. The voidage also increases as the friction coefficient increasing. And the velocity distribution is more uniformity and is closer to the mass flow with the friction coefficient deceasing.

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“…Langston et al [18] carried out a 2D DEM simulation of particles shaped by a circle intersection. Kohring et al [19] simulated non-spherical particles flowing through a hopper. Allen and Frenkel [20] reviewed the 2D simulation of non-spherical particles, which included lines, ellipsoids, dumb-bell and sphere-cylinders.…”

Section: Introductionmentioning

confidence: 99%

Discrete Element Method Simulation of Cylinder‐Shaped Particle Flow in a Gas‐Solid Fluidized Bed

et al. 2009

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Discrete element method (DEM) simulation of the flow of cylinder-shaped particles in a gas-solid fluidized bed has been carried out three-dimensionally. The gas and particle motions were modeled with the k-e turbulent model and DEM simulation, respectively. The cylinder-shaped particles were elongated by several spheres, which were described by a cylinder with hemi-spherical ends of the same radius. Drag-, contact-and gravitational forces acting on each individual particle were considered when establishing the mathematical models. Simulated flow patterns and pressure drops at different superficial gas velocities were in good agreement with the experimental results from a visual fluidized bed. In addition, some hydrodynamics of gas/cylinder-shaped particle flow, i.e., bed expansion ratio, particle volume fraction, particle velocity and mean percentage of particle collisions, were obtained at various superficial gas velocities.

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Computer simulations of critical, non-stationary granular flow through a hopper

Cited by 62 publications

References 4 publications

Distinct element modelling of non-spherical frictionless particle flow

Distinct element modelling of non-spherical frictionless particle flow

Discrete element method modeling of corn-shaped particle flow in rectangular hopper

Discrete Element Method Simulation of Cylinder‐Shaped Particle Flow in a Gas‐Solid Fluidized Bed

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