Title :
An analysis of disk flutter in hard disk drives in aerodynamic simulations
Author :
Tatewaki, Masayuki ; Tsuda, Naozumi ; Maruyama, Tsugito
Author_Institution :
Autonomous Syst. Lab., Fujitsu Labs. Ltd., Kawasaki, Japan
fDate :
3/1/2001 12:00:00 AM
Abstract :
In this paper, using aerodynamic numerical analysis, we investigate mechanisms causing disk flutter in hard disk drives. A computer simulation model of three stacked disks was calculated using the finite-difference method with the LES model of turbulence. As a result, secondary airflows were found to move upward and downward though a shroud gap around the outer edge of the disk. The inference from this discovery is that a phase difference of spatial pressure patterns between the top surface and bottom surface of a disk causes disk flutter
Keywords :
aerodynamics; disc drives; finite difference methods; hard discs; LES model; aerodynamic simulations; bottom surface; disk flutter; finite-difference method; hard disk drives; secondary airflows; shroud gap; spatial pressure patterns; stacked disks; top surface; Aerodynamics; Analytical models; Computational modeling; Energy consumption; Hard disks; Hydrodynamics; Magnetic heads; Numerical simulation; Vibrations; Visualization;
Journal_Title :
Magnetics, IEEE Transactions on
