2005
DOI: 10.1016/j.powtec.2005.04.019
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Three-dimensional discrete element simulations in hoppers and silos

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Cited by 86 publications
(35 citation statements)
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“…The static force describes friction prior to gross sliding and comprises elastic and viscous ingredients, while the dynamic force describes friction after gross sliding and is expressed by the Coulomb's law. For evaluating the contact forces (3)(4), all contacts between the particles and their neighbours should be detected. A cell-based method is used for contact detection [18].…”
Section: Mathematical Model Of the Discrete Element Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…The static force describes friction prior to gross sliding and comprises elastic and viscous ingredients, while the dynamic force describes friction after gross sliding and is expressed by the Coulomb's law. For evaluating the contact forces (3)(4), all contacts between the particles and their neighbours should be detected. A cell-based method is used for contact detection [18].…”
Section: Mathematical Model Of the Discrete Element Methodsmentioning
confidence: 99%
“…The conducted research is mainly focused on several aspects as follows: wall pressure, discharge rate and internal properties. The study of the bulk material pressure on the walls of a hopper plays a very important role in hopper design [3]. The prediction of the discharge rate is important for effective operation and control of the transport system [4].…”
Section: Introductionmentioning
confidence: 99%
“…The Rayleigh time is taken by an energy wave to transverse the smallest element in the particular system. Time step must be so short, that the disturbance of particle's motion could only propagate to the nearest neighbors [20,35,36]. The final time step value was Δt = 4.21·10 -5 s. The grid size in all simulation was 2.5R min , where R min is the minimal radius of particles.…”
Section: The Simulation Processmentioning
confidence: 99%
“…Finally, the minimal and maximal radii of particles, needed for generation of the particles using the assumed distribution is found from expressions (6) and (7) by multiplying the average radius of particle by k 1 and k 2 . The following values of these ratios were assumed: k 1 = 1.134, k 2 = 0.851.…”
Section: Simulation Setupmentioning
confidence: 99%