Modeling thermal characteristics of a fixed disk drive

Author

Eibeck, Pamela A. ; Cohen, David J.

Author_Institution

Dept. of Mech. Eng., California Univ., Berkeley, CA, USA

Volume

11

Issue

4

fYear

1988

Firstpage

566

Lastpage

570

Abstract

The thermal characteristics of an IBM 5-1/4-in. fixed disk drive were experimentally determined to aid in the development of a general disk-drive model. In general, the thermal model was able to predict the transient temperature profiles. At 4000 r/min, the steady-state temperatures of the air and arms were predicted to within 0.4 degrees C, and the base temperature was predicted to within 2.4 degrees C. The air temperature was found to be uniform within experimental uncertainty outside of the disk stack, but was 1.4 degrees C higher between corotating disks. The temperature predictions are extremely sensitive to the external heat transfer coefficients and the heat sources input by the user. It was found that more fundamental information regarding viscous dissipation and air flow within a disk drive must be known to produce a reliable thermal model.<>

Keywords

cooling; hard discs; heat transfer; 5.25 in; air flow; base temperature; corotating disks; disk-drive model; external heat transfer coefficients; fixed disk drive; heat sources; steady-state temperatures; thermal characteristics; thermal model; transient temperature profiles; viscous dissipation; Arm; Disk drives; Heat transfer; Magnetic heads; Mechanical engineering; Predictive models; Temperature measurement; Temperature sensors; Thermal conductivity; Thermal expansion;

fLanguage

English

Journal_Title

Components, Hybrids, and Manufacturing Technology, IEEE Transactions on

Publisher

ieee

ISSN

0148-6411

Type

jour

DOI

10.1109/33.16698

Filename

16698