Abstract
In this paper, the aerodynamically dissipated power loss in hard disk drives is studied. The effects of rotational speed and form factor on the dissipation power loss are analyzed and compared to experimental results using 3.5″, 2.5″ and 1″ disks. The torque coefficients for laminar and turbulent models are derived for various enclosure conditions. We implement experiments using a vacuum chamber and calculate frictional power loss by disk rotation. For a 1-inch disk, the power dissipation agrees well with the laminar model, which is inversely proportional to the half power of Reynolds number. The frictional power consumption by 3.5-inch disk is similar to the air turbulent model. Finally, we propose the drive enclosure geometry to minimize the aerodynamic power loss based on the experimental results.
Original language | English |
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Title of host publication | Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 85-86 |
Number of pages | 2 |
ISBN (Electronic) | 0780387171, 9780780387171 |
DOIs | |
Publication status | Published - 2004 |
Event | 2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004 - Seoul, Korea, Republic of Duration: 2004 Aug 16 → 2004 Aug 19 |
Publication series
Name | Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004 |
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Other
Other | 2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004 |
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Country | Korea, Republic of |
City | Seoul |
Period | 04/8/16 → 04/8/19 |
Bibliographical note
Publisher Copyright:© 2004 IEEE.
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering