Analysis of Radial Air-Shear Force on Magnetic Disks for Reducing the Spin-off of Lubricants

Analysis of Radial Air-Shear Force on Magnetic Disks for Reducing the Spin-off of Lubricants

To reduce the spin-off of lubricants, which is caused by the radial component of air-shear force on a magnetic disk, we analyzed the air-velocity distribution and the air-shear force by using the three dimensional large eddy simulation (LES) and the finite-element method. A sensitivity analysis of f...

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Veröffentlicht in:TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C 2002/07/25, Vol.68(671), pp.2133-2136
Hauptverfasser: KURITA, Masayuki, SHIMIZU, Hayato, MIZUMOTO, Muneo, OOTANI, Yuuichi
Format: Artikel
Sprache:eng ; jpn
Schlagworte:
Lubrication
Magnetic Disk Drives
Numerical Analysis
Sensitivity Analysis
Shear Flow
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container_end_page 2136
container_issue 671
container_start_page 2133
container_title TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C
container_volume 68
creator KURITA, Masayuki
SHIMIZU, Hayato
MIZUMOTO, Muneo
OOTANI, Yuuichi
description To reduce the spin-off of lubricants, which is caused by the radial component of air-shear force on a magnetic disk, we analyzed the air-velocity distribution and the air-shear force by using the three dimensional large eddy simulation (LES) and the finite-element method. A sensitivity analysis of five design parameters showed that disk/arm clearance and arm thickness had greater effect on the mean radial air-shear force than the other three parameters. The air-shear force was decreased when these two parameters became small. The force on the disk with the optimum parameters is 12% less than the force on a current design disk. The optimized drive can thus be operated at 14% higher rotational speed with the same reliability as current drives.
doi_str_mv 10.1299/kikaic.68.2133
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subjects Lubrication
Magnetic Disk Drives
Numerical Analysis
Sensitivity Analysis
Shear Flow
title Analysis of Radial Air-Shear Force on Magnetic Disks for Reducing the Spin-off of Lubricants
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