TY - JOUR
T1 - A granular Discrete Element Method for arbitrary convex particle shapes
T2 - Method and packing generation
AU - Seelen, L. J.H.
AU - Padding, J. T.
AU - Kuipers, J. A.M.
N1 - Accepted Author Manuscript
PY - 2018
Y1 - 2018
N2 - A novel granular discrete element method (DEM) is introduced to simulate mixtures of particles of any convex shape. To quickly identify pairs of particles in contact, the method first uses a broad-phase and a narrow-phase contact detection strategy. After this, a contact resolution phase finds the contact normal and penetration depth. A new algorithm is introduced to effectively locate the contact point in the geometric center of flat faces in partial contact. This is important for a correct evaluation of the torque on each particle, leading to a much higher stability of stacks of particles than with previous algorithms. The granular DEM is used to generate random packings in a cylindrical vessel. The simulated shapes include non-spherical particles with different aspect ratio cuboids, cylinders and ellipsoids. More complex polyhedral shapes representing sand and woodchip particles are also used. The latter particles all have a unique shape and size, resembling real granular particle packings. All packings are analyzed extensively by investigating positional and orientational ordering.
AB - A novel granular discrete element method (DEM) is introduced to simulate mixtures of particles of any convex shape. To quickly identify pairs of particles in contact, the method first uses a broad-phase and a narrow-phase contact detection strategy. After this, a contact resolution phase finds the contact normal and penetration depth. A new algorithm is introduced to effectively locate the contact point in the geometric center of flat faces in partial contact. This is important for a correct evaluation of the torque on each particle, leading to a much higher stability of stacks of particles than with previous algorithms. The granular DEM is used to generate random packings in a cylindrical vessel. The simulated shapes include non-spherical particles with different aspect ratio cuboids, cylinders and ellipsoids. More complex polyhedral shapes representing sand and woodchip particles are also used. The latter particles all have a unique shape and size, resembling real granular particle packings. All packings are analyzed extensively by investigating positional and orientational ordering.
KW - Contact detection
KW - Discrete element method
KW - Non-spherical particle
KW - Orientational ordering
KW - Packing
KW - Solid volume fraction
UR - http://resolver.tudelft.nl/uuid:5c1f3e2d-604f-49f5-9ab2-442bf9c9baf1
UR - http://www.scopus.com/inward/record.url?scp=85047643255&partnerID=8YFLogxK
U2 - 10.1016/j.ces.2018.05.034
DO - 10.1016/j.ces.2018.05.034
M3 - Article
AN - SCOPUS:85047643255
SN - 0009-2509
VL - 189
SP - 84
EP - 101
JO - Chemical Engineering Science
JF - Chemical Engineering Science
ER -