Aerodynamic effects of disk size and enclosure gap on power consumption in HDD

Seung Yop Lee, Sung Oug Cho, Yoon Chul Rhim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 languageEnglish
Title of host publicationAsia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages85-86
Number of pages2
ISBN (Electronic)0780387171, 9780780387171
DOIs
Publication statusPublished - 2004 Jan 1
Event2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004 - Seoul, Korea, Republic of
Duration: 2004 Aug 162004 Aug 19

Publication series

NameAsia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004

Other

Other2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004
CountryKorea, Republic of
CitySeoul
Period04/8/1604/8/19

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All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

Lee, S. Y., Cho, S. O., & Rhim, Y. C. (2004). Aerodynamic effects of disk size and enclosure gap on power consumption in HDD. In Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004 (pp. 85-86). [1521963] (Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APMRC.2004.1521963