Abstract
Two-dimensional CFD simulations were
performed to investigate the impact of density, particle
diameter and degree of filling on the flow behavior of a solid
particle mixture in a transverse
plane of a rotary drum. The
Eulerian approach with kinetic
theory of granular flow was
used to simulate granular phases of CaCO
3
and Al
2
O
3
under
the rolling mode. The volume fractions of each phase reveal
that, under the consid
ered conditions, the particle size has a
greater impact on segregation th
an the density. Larger
particles are collected at the bottom of the rotating drum
while smaller particles move
more into the mid-section of the
bed. The active layer is responsib
le for the segregation owing
to the trajectory mechanism. Particle segregation due to
percolation is more dominant
than segregation due to
condensation. In addition to that,
solids volume fraction
variations in the moving bed indicate that the influence of
the degree of particle filling
made no significant impact on
the degree of mixing
in the rotating drum.
performed to investigate the impact of density, particle
diameter and degree of filling on the flow behavior of a solid
particle mixture in a transverse
plane of a rotary drum. The
Eulerian approach with kinetic
theory of granular flow was
used to simulate granular phases of CaCO
3
and Al
2
O
3
under
the rolling mode. The volume fractions of each phase reveal
that, under the consid
ered conditions, the particle size has a
greater impact on segregation th
an the density. Larger
particles are collected at the bottom of the rotating drum
while smaller particles move
more into the mid-section of the
bed. The active layer is responsib
le for the segregation owing
to the trajectory mechanism. Particle segregation due to
percolation is more dominant
than segregation due to
condensation. In addition to that,
solids volume fraction
variations in the moving bed indicate that the influence of
the degree of particle filling
made no significant impact on
the degree of mixing
in the rotating drum.
