The effect of rod obstruction on transition speed of large flow oscillation in co-rotating disks

Dae Wee Kong; Won Gu Joo

doi:10.1109/APMRC.2004.1521971

The effect of rod obstruction on transition speed of large flow oscillation in co-rotating disks

Dae Wee Kong, Won Gu Joo

Department of Mechanical Engineering

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

Abstract

The trend in the computer industry to produce smaller disk drives rotating at higher speeds requires an improved understanding of fluid motion in the space between disks. The distribution of pressure disturbance on disks has relation to flow structure. To investigate the flow structure, the circumferential velocity was obtained using hot-wire measurements for the flow between the center pair of four disks of common radius R₂ co-rotating at angular velocity σ in a fixed cylindrical enclosure. Disk radius is about 4 times larger than usual one of HDD to detect detail velocity profile. Hot-wire supporter acts as an obstruction in this case. The effects of rotating speed on large flow oscillation in outer region with hotwire supporter were investigated.

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	101-102
Number of pages	2
ISBN (Electronic)	0780387171, 9780780387171
DOIs	https://doi.org/10.1109/APMRC.2004.1521971
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

Other

Other	2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004
Country/Territory	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

Access to Document

10.1109/APMRC.2004.1521971

Cite this

Kong, D. W., & Joo, W. G. (2004). The effect of rod obstruction on transition speed of large flow oscillation in co-rotating disks. In Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004 (pp. 101-102). [1521971] (Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APMRC.2004.1521971

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abstract = "The trend in the computer industry to produce smaller disk drives rotating at higher speeds requires an improved understanding of fluid motion in the space between disks. The distribution of pressure disturbance on disks has relation to flow structure. To investigate the flow structure, the circumferential velocity was obtained using hot-wire measurements for the flow between the center pair of four disks of common radius R2 co-rotating at angular velocity σ in a fixed cylindrical enclosure. Disk radius is about 4 times larger than usual one of HDD to detect detail velocity profile. Hot-wire supporter acts as an obstruction in this case. The effects of rotating speed on large flow oscillation in outer region with hotwire supporter were investigated.",

author = "Kong, {Dae Wee} and Joo, {Won Gu}",

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year = "2004",

doi = "10.1109/APMRC.2004.1521971",

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series = "Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004",

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Kong, DW & Joo, WG 2004, The effect of rod obstruction on transition speed of large flow oscillation in co-rotating disks. in Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004., 1521971, Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004, Institute of Electrical and Electronics Engineers Inc., pp. 101-102, 2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004, Seoul, Korea, Republic of, 04/8/16. https://doi.org/10.1109/APMRC.2004.1521971

The effect of rod obstruction on transition speed of large flow oscillation in co-rotating disks. / Kong, Dae Wee; Joo, Won Gu.

Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004. Institute of Electrical and Electronics Engineers Inc., 2004. p. 101-102 1521971 (Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004).

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

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Kong DW, Joo WG. The effect of rod obstruction on transition speed of large flow oscillation in co-rotating disks. In Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004. Institute of Electrical and Electronics Engineers Inc. 2004. p. 101-102. 1521971. (Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004). doi: 10.1109/APMRC.2004.1521971

The effect of rod obstruction on transition speed of large flow oscillation in co-rotating disks

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All Science Journal Classification (ASJC) codes

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