Experimental and numerical studies about the effect of airflow on slider vibration with and without a disk damper

Ji Min Han, Yo Han Um, Jin Gyoo Yoo, Yoon Chul Rhim

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

Abstract

As the recording density and data transfer rate of a hard disk drive increase, TPI and rotational speed have been increased so that a single actuator alone may not be enough to control TMR budget. High-speed rotation of a disk induces airflow inside HDD cavity and the influence of airflow on HSA has become critical as TPI increases. A disk damper, which is designed to suppress the disk flutter, changes the airflow significantly so that the E-block and slider are open to the flow with relatively large pressure fluctuation. The effect of disk damper shape on the airflow field is studied numerically and experimentally from the aerodynamic point of view. Unsteady airflow in HDD cavity is simulated numerically by using a large eddy simulation method and frequency spectrum of the pressure fluctuation near the slider is obtained. Numerical results are compared with experimental results for three different-shape disk dampers and two types of E-blocks. The relationship is analyzed between the vibration of the slider and the pressure fluctuation of the airflow near the slider. A newly proposed shape of disk damper shows good characteristics on suppressing the vibration of the slider due to the airflow.

Original languageEnglish
Title of host publicationAsia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004
PublisherInstitute of Electrical and Electronics Engineers Inc.
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

Other

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

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Data transfer rates
Budget control
Hard disk storage
Large eddy simulation
Aerodynamics
Actuators

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

Han, J. M., Um, Y. H., Yoo, J. G., & Rhim, Y. C. (2004). Experimental and numerical studies about the effect of airflow on slider vibration with and without a disk damper. In Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004 [1521926] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APMRC.2004.1521926
Han, Ji Min ; Um, Yo Han ; Yoo, Jin Gyoo ; Rhim, Yoon Chul. / Experimental and numerical studies about the effect of airflow on slider vibration with and without a disk damper. Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004. Institute of Electrical and Electronics Engineers Inc., 2004.
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Han, JM, Um, YH, Yoo, JG & Rhim, YC 2004, Experimental and numerical studies about the effect of airflow on slider vibration with and without a disk damper. in Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004., 1521926, Institute of Electrical and Electronics Engineers Inc., 2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004, Seoul, Korea, Republic of, 04/8/16. https://doi.org/10.1109/APMRC.2004.1521926

Experimental and numerical studies about the effect of airflow on slider vibration with and without a disk damper. / Han, Ji Min; Um, Yo Han; Yoo, Jin Gyoo; Rhim, Yoon Chul.

Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004. Institute of Electrical and Electronics Engineers Inc., 2004. 1521926.

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

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Han JM, Um YH, Yoo JG, Rhim YC. Experimental and numerical studies about the effect of airflow on slider vibration with and without a disk damper. In Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004. Institute of Electrical and Electronics Engineers Inc. 2004. 1521926 https://doi.org/10.1109/APMRC.2004.1521926