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

Seung Yop Lee; Sung Oug Cho; Yoon Chul Rhim

doi:10.1109/APMRC.2004.1521963

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

Seung Yop Lee, Sung Oug Cho, Yoon Chul Rhim

Department of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
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	https://doi.org/10.1109/APMRC.2004.1521963
Publication status	Published - 2004 Jan 1
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

Other

Other	2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004
Country	Korea, Republic of
City	Seoul
Period	04/8/16 → 04/8/19

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

Access to Document

10.1109/APMRC.2004.1521963

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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

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Lee, SY, Cho, SO & Rhim, YC 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., 1521963, Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004, Institute of Electrical and Electronics Engineers Inc., pp. 85-86, 2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004, Seoul, Korea, Republic of, 04/8/16. https://doi.org/10.1109/APMRC.2004.1521963

Aerodynamic effects of disk size and enclosure gap on power consumption in HDD. / Lee, Seung Yop; Cho, Sung Oug; Rhim, Yoon Chul.

Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004. Institute of Electrical and Electronics Engineers Inc., 2004. p. 85-86 1521963 (Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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Lee SY, Cho SO, Rhim YC. Aerodynamic effects of disk size and enclosure gap on power consumption in HDD. In Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004. Institute of Electrical and Electronics Engineers Inc. 2004. p. 85-86. 1521963. (Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004). https://doi.org/10.1109/APMRC.2004.1521963