DSMC/MGL comparisons of stresses on slider air bearing with nanometer spacings

Pressure and shear stress distributions on the slider air-bearing surface were calculated using a molecular gas-film lubrication (MGL) equation and direct simulation Monte Carlo (DSMC) method with an accommodation coefficient /spl alpha/ as a parameter, which characterizes the gas surface scattering...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2002-09, Vol.38 (5), p.2153-2155
Main Authors: Fukui, S., Yamane, K.
Format: Article
Language:English
Subjects:
Applied sciences
Boundary conditions
Electronics
Equations
Exact sciences and technology
Lubrication
Magnetic and optical mass memories
Magnetism
Monte Carlo methods
Other magnetic recording and storage devices (including tapes, disks, and drums)
Reflection
Scattering parameters
Shearing
Solid modeling
Storage and reproduction of information
Stress
Tribology
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Summary:Pressure and shear stress distributions on the slider air-bearing surface were calculated using a molecular gas-film lubrication (MGL) equation and direct simulation Monte Carlo (DSMC) method with an accommodation coefficient /spl alpha/ as a parameter, which characterizes the gas surface scattering at the boundary surfaces. As the accommodation coefficient /spl alpha/ decreases, which means that the rates of diffuse reflection at boundary surface decreases, pressures and shear stresses decrease. Both MGL analyses and DSMC results agree well with each other.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2002.802799