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Keywords: kinetic theory
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Journal Articles

Granular Collision Lubrication: Experimental Investigation and Comparison to Theory

Karim N. Elkholy, M. M. Khonsari
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. October 2007, 129(4): 923–932.
https://doi.org/10.1115/1.2768613
Published Online: May 25, 2007
... for the friction coefficient as a function of the rotational speed and the applied load for several surface roughness combinations. Simulations of the kinetic theory for the granular material are performed and compared to the experimental results. The experiments provide an evidence for the formation of granular...
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Topics: Disks, Friction, Lubrication, Stress, Surface roughness, Granular materials, Collisions (Physics), Shear (Mechanics), Displacement
Journal Articles

Granular Lubrication: Toward an Understanding of the Transition Between Kinetic and Quasi-Fluid Regime

I. Iordanoff, M. M. Khonsari
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. January 2004, 126(1): 137–145.
https://doi.org/10.1115/1.1633575
Published Online: January 13, 2004
... show good agreement between the kinetic model and the PDM model. Note that in the kinetic simulations, the maximum volume fraction is set to 0.65. This value, consistent with the kinetic theory assumption 7 8 9 10 11 12 13 , is commonly taken as the maximum volume fraction. This corresponds...
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Topics: Flow (Dynamics), Fluids, Lubrication, Particulate matter, Pulse width modulation, Simulation, Dynamic models
Journal Articles

New First and Second Order Slip Models for the Compressible Reynolds Equation

Lin Wu, D. B. Bogy
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. July 2003, 125(3): 558–561.
https://doi.org/10.1115/1.1538620
Published Online: June 19, 2003
.... 120 – 130 . Mitsuya , Y. , 1993 , “ Modified Reynolds Equation for Ultra-Thin Film Gas Lubrication Using 1.5-Order Slip-Flow Model and Considering Surface Accommodation Coefficient ,” ASME J. Tribol. , 115 , pp. 289 – 294 . Kennard, E. H., 1938, Kinetic Theory of Gases , McGraw-Hill...
View Article titled, New First and Second Order Slip Models for the Compressible Reynolds Equation
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Topics: Lubrication, Pressure, Knudsen number, Mean free path, Momentum