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 | |
| 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 |
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All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
Cite this
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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
TY - GEN
T1 - Aerodynamic effects of disk size and enclosure gap on power consumption in HDD
AU - Lee, Seung Yop
AU - Cho, Sung Oug
AU - Rhim, Yoon Chul
PY - 2004/1/1
Y1 - 2004/1/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84934275815&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84934275815&partnerID=8YFLogxK
U2 - 10.1109/APMRC.2004.1521963
DO - 10.1109/APMRC.2004.1521963
M3 - Conference contribution
AN - SCOPUS:84934275815
T3 - Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004
SP - 85
EP - 86
BT - Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004
PB - Institute of Electrical and Electronics Engineers Inc.
ER -