Coarsening of axial segregation patterns of slurries in a horizontally rotating drum

2006 ◽  
Vol 74 (3) ◽  
Author(s):  
Tilo Finger ◽  
Andreas Voigt ◽  
Jörg Stadler ◽  
Heiko G. Niessen ◽  
Lama Naji ◽  
...  
Keyword(s):  
Rotating Drum ◽  
Axial Segregation

Particle shape-induced axial segregation of binary mixtures of spheres and ellipsoids in a rotating drum

2021 ◽  
Vol 235 ◽  
pp. 116491
Author(s):  
S.Y. He ◽  
J.Q. Gan ◽  
D. Pinson ◽  
A.B. Yu ◽  
Z.Y. Zhou
Keyword(s):  
Binary Mixtures ◽  
Particle Shape ◽  
Rotating Drum ◽  
Axial Segregation

scholarly journals The geometric axial surface profiles of granular flows in rotating drums

2021 ◽  
Vol 121 (5) ◽  
Author(s):  
Elbasher M.E. Ahmed ◽  
I. Govender ◽  
A. Mainza
Keyword(s):  
Free Surface ◽  
Surface Profile ◽  
Rotating Drum ◽  
Cross Sectional ◽  
Axial Segregation ◽  
Wide Range ◽  
Free Surface Profile ◽  
Axial Profile ◽  
Slurry Transport ◽  
Rotating Drums

SYNOPSIS A mechanistic description of axial segregation in rotating drum flows remains an open question. Consequently, optimal mixing of grinding balls and rocks for efficient breakage, maximum production of fines, and slurry transport is seldom achieved. Experimental and numerical studies of granular mixtures in rotating drums identify alternating axial bands that eventually coarsen in the long-term limit. Most models of axial segregation are limited to binary mixtures and cannot always predict the logarithmic coarsening effects observed experimentally. A key missing factor is a robust description of the axial free surface profile that is valid across a wide range of flow regimes. We present a practical model of the axial free surface profile by linking it to readily-derived geometric features of the cross-sectional S-shaped free surface profile. A parametric study shows good agreement with experimental measurements reported in the literature and heuristically valid trends. Keywords: rotating drum, granular flow, axial profile, comminution, mixing, segregation.

1013 Mechanism of axial segregation in a tapered rotating drum

2008 ◽  
Vol 2008.83 (0) ◽  
pp. _10-13_
Author(s):  
Yuta EMURA ◽  
Hirotaka YADA ◽  
Toshihiro KAWAGUCHI ◽  
Takuya TSUJI ◽  
Toshitsugu TANAKA
Keyword(s):  
Rotating Drum ◽  
Axial Segregation

A study of the axial segregation in a rotating drum using deformable particles

2006 ◽  
Vol 166 (3) ◽  
pp. 161-166 ◽  
Author(s):  
H.P. Kuo ◽  
Y.C. Hsiao ◽  
P.Y. Shih
Keyword(s):  
Rotating Drum ◽  
Axial Segregation ◽  
Deformable Particles

Continuum theory of axial segregation in a long rotating drum

1999 ◽  
Vol 60 (2) ◽  
pp. 1975-1987 ◽  
Author(s):  
I. S. Aranson ◽  
L. S. Tsimring ◽  
V. M. Vinokur
Keyword(s):  
Continuum Theory ◽  
Rotating Drum ◽  
Axial Segregation

Transition of axial segregation patterns in a long rotating drum

Particuology ◽  
2014 ◽  
Vol 13 ◽  
pp. 128-133 ◽  
Author(s):  
Zequn Cui ◽  
Yongzhi Zhao ◽  
Youchuan Chen ◽  
Xiao Liu ◽  
Zhengli Hua ◽  
...  
Keyword(s):  
Rotating Drum ◽  
Axial Segregation

Investigation of axial segregation in a rotating drum

2005 ◽  
Vol 153 (3) ◽  
pp. 196-203 ◽  
Author(s):  
H.P. Kuo ◽  
R.C. Hsu ◽  
Y.C. Hsiao
Keyword(s):  
Rotating Drum ◽  
Axial Segregation

RADIAL AND AXIAL SEGREGATION OF GRANULAR MIXTURES IN THE ROTATING-DRUM GEOMETRY

2001 ◽  
Vol 04 (04) ◽  
pp. 469-479 ◽  
Author(s):  
SANJAY PURI ◽  
HISAO HAYAKAWA
Keyword(s):  
Surface Tension ◽  
Phenomenological Model ◽  
Dynamical Evolution ◽  
Rotating Drum ◽  
Effective Surface ◽  
Axial Segregation ◽  
Granular Mixtures ◽  
Sharp Interfaces

We formulate a phenomenological model for the dynamical evolution of granular mixtures in a rotating drum. In particular, we present a dynamical basis for an "effective surface tension," which penalizes sharp interfaces between regions enriched in different components of the mixture. We also present representative results which demonstrate that our model captures many experimental features for this problem.

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