Numerical Modeling for the Characterization of Flow Excitation for the HDD Disk Vibration Control

Abstract:

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This article presents a modeling method for air flow analysis of a hard disk drive. Air flow excitation causes disk vibration that aggravates TMR budget of the design of modern high performance hard drives. And it is the most expensive budget consumer so that controlling of the flutter becomes the primary design issue of the data storage industry. In the presented work, air flow excitation forces are characterized by LES modeling and the results are verified with experiments. A squeeze-film-type disk damper is employed in the experiments and it is applied for a hardware design improvement for disk flutter reduction. LES and RANS are compared and alternately used in a calculation in order to minimize computational efforts.

Info:

Periodical:

Solid State Phenomena (Volume 110)

Edited by:

Young-Jin Kim

Pages:

143-150

DOI:

10.4028/www.scientific.net/SSP.110.143

Citation:

J. C. Koo et al., "Numerical Modeling for the Characterization of Flow Excitation for the HDD Disk Vibration Control", Solid State Phenomena, Vol. 110, pp. 143-150, 2006

Online since:

March 2006

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Price:

$35.00

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