Studies of particle flows have followed three parallel paths: (1) experiment, (2) analysis based on the assumption of a continuum, and (3) direct particle simulation. In this paper, we perform continuum and particle analyses and compare them to each other, and to previously reported experiments. Both the particle simulations and the continuum model over-predict the experimental normal load and shear force, however, the trends and orders-of-magnitude are in agreement. The modeling approaches are based on first principles, and do not rely on curve fitting to obtain effective properties of the mixture such as viscosity or conductivity.

1.
Ali
,
I.
,
Roy
,
S. R.
, and
Shin
,
G.
,
1994
, “
Chemical-Mechanical Polishing of Interlayer Dielectric: A Review
,”
Solid State Technol.
,
pp.
63
69
.
2.
Tichy
,
J. A.
,
Levert
,
J. A.
,
Shen
,
L.
, and
Danyluk
,
S.
,
1999
, “
Contact Mechanics and Lubrication Hydrodynamics of Chemical-Mechanical Polishing
,”
J. Electrochem. Soc.
,
146
, pp.
1
7
.
3.
Cho, U., and Tichy, J. A., 1997, “Quantitative Correlation of Wear Debris Analysis,” World Tribology Congress, Institute of Mechanical Engineers.
4.
Poggie
,
R. A.
,
Mishra
,
A. K.
, and
Davison
,
J. A.
,
1994
, “
Three-Body Abrasive Wear Behavior of Orthopedic Implant Bearing Surfaces from Titanium Debris
,”
J. Mater. Sci.: Mater. Med.
,
5
, pp.
387
392
.
5.
Yu
,
C. M.
,
Craig
,
K.
, and
Tichy
,
J. A.
,
1994
, “
Granular Collision Lubrication
,”
J. Rheol.
,
38
, pp.
921
936
.
6.
Yu
,
C. M.
, and
Tichy
,
J. A.
,
1996
, “
Granular Collision Lubrication: Effect of Surface Roughness, Particle Size Solid Fraction
,”
STLE Tribol. Trans.
,
39
, pp.
537
546
.
7.
Heshmat
,
H.
,
1991
, “
High-Temperature Solid-Lubricated Bearing Development-Dry Powder-Lubricated Traction Testing
,”
AIAA Journal of Propulsion and Power
,
75
, pp.
814
820
.
8.
Heshmat
,
H.
,
1992
, “
The Quasi-Hydrodynamic Mechanism of Powder Lubrication: Part 2. Lubricant Film Pressure Profile
,”
Lubr. Eng.
,
48
, pp.
373
383
.
9.
Dai
,
F.
,
Khonsari
,
M. M.
, and
Lu
,
Y. Z.
,
1994
, “
On the Lubrication Mechanism of Grain Flows
,”
STLE Tribol. Trans.
,
37
, pp.
516
524
.
10.
McKeague
,
K. T.
, and
Khonsari
,
M. M.
,
1995
, “
Generalized Boundary Interactions for Powder Lubricated Couette Flow
,”
ASME J. Tribol.
,
117
, pp.
1
8
.
11.
Campbell, C., and Zhang, Y., 1991, “The Interface between Fluid-Like and Solid-Like Behavior in Granular Flows,” Advances in Micromechanics of Granular Materials, Studies in Applied Mechanics, H. Shen et al., Eds., 31, pp. 261–270.
12.
Savage
,
S. B.
,
1998
, “
Analyses of Slow High Concentration Flow of Granular Materials
,”
J. Fluid Mech.
,
177
, pp.
1
26
.
13.
Campbell
,
C. S.
, and
Brennen
,
C. S.
,
1985
, “
Computer Simulations of Granular Shear Flows
,”
J. Fluid Mech.
,
151
, pp.
167
188
.
14.
Bagnold
,
R.
,
1954
, “
Experiments on a Gravity-Free Dispersion of Large Solid Spheres in a Newtonian Fluid under Shear
,”
Proc. R. Soc. London, Ser. A
225
, pp.
45
63
.
15.
Savage
,
S. B.
, and
Sayed
,
M.
,
1984
, “
Stresses Developed by Cohesionless Granular Materials Sheared in a Annular Shear Cell
,”
J. Fluid Mech.
,
142
, pp.
391
430
.
16.
Walton, O., and Braun, R., 1993, “Simulation of Rotary-Drum and Repose Tests for Frictional Spheres and Rigid Sphere Clusters,” Joint DOE/NSF Workshop On Flow of Particulates and Fluids, Ithaca, NY.
17.
Walton, O., 1993, “Numerical Simulation of Inelastic Frictional Particle-Particle Interactions,” Particulate Two-Phase Flow, M. Roco, Ed., chap. 25, Butterworth-Heinemann, Boston, MA.
18.
Hopkins, M., Jenkins, J., and Louge, M., 1991, “On the Structure of 3D Shear Flows,” Advances in Micromechanics of Granular Materials, Studies in Applied Mechanics, H. Shen et al., Eds., 31, pp. 271–279.
19.
Craig
,
K.
,
Buckholz
,
R.
, and
Domoto
,
G.
,
1986
, “
An Experimental Study of the Rapid Flow of Dry Cohesionless Metal Powders
,”
ASME J. Appl. Mech.
,
53
, pp.
935
942
.
20.
Jenkins
,
J.
, and
Richman
,
M. W.
,
1985
, “
Kinetic Theory for Plane Flows of a Dense Gas of Identical, Rough, Inelastic, Circular Disks
,”
Phys. Fluids
,
28
, pp.
3485
3495
.
21.
Jenkins, J., 1987, “Rapid Flows of Granular Materials,” in Non-Classical Continuum Mechanics, Cambridge Press, Cambridge, United Kingdom, pp. 213–225.
22.
Johnson
,
P. C.
, and
Jackson
,
R.
,
1987
, “
Frictional-Collisional Constitutive Relations for Granular Materials with Applications to Plane Shearing
,”
J. Fluid Mech.
,
176
, pp.
67
93
.
23.
Lun
,
C. K. K.
,
Savage
,
S. B.
,
Jeffrey
,
D. J.
, and
Chepurniy
,
N.
,
1984
, “
Kinetic Theories for Granular Flows: Inelastic Particles in Couette Flow and Slightly Inelastic Particles in a General Flow Field
,”
J. Fluid Mech.
,
140
, pp.
223
256
.
24.
Hanes
,
D. M.
, and
Inman
,
D. L.
,
1985
, “
Observations of Rapidly Flowing Granular Fluid Materials
,”
J. Fluid Mech.
,
150
, pp.
357
380
.
25.
Jenkins
,
J. T.
, and
Richman
,
M. W.
,
1987
, “
Boundary Conditions for Plane Flows of Smooth, Nearly Elastic, Circular Disks
,”
J. Fluid Mech.
,
171
, pp.
53
69
.
26.
Jenkins
,
J.
,
1990
, “
Boundary Conditions for Rapid Granular Flows: Flat, Frictional Walls
,”
ASME J. Appl. Mech.
,
59
, pp.
120
127
.
27.
Rappaport, D., 1997, The Art of Molecular Dynamics Simulation, Cambridge University Press, Cambridge, United Kingdom.
28.
Hudson, J. B., Sawyer, W. G., Bryson, D., and Svanes, T., 1997, “An Interactive Molecular Dynamics Simulation of Atomic Behavior,” National Educators Workshop Conference Proceedings, Seattle, WA.
29.
Elrod, H., 1996, “Numerical Experiments with Flows of Elongated Granules,” Tribology Series 31, Proceedings of 22nd Leeds-Lyon Symposium, Elsevier, Amsterdam, pp. 347–354.
You do not currently have access to this content.