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An analysis of disk flutter in hard disk drives in aerodynamic simulations

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3 Author(s)
M. Tatewaki ; Autonomous Syst. Lab., Fujitsu Labs. Ltd., Kawasaki, Japan ; N. Tsuda ; T. Maruyama

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

Published in:

IEEE Transactions on Magnetics  (Volume:37 ,  Issue: 2 )