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 language | English |
|---|---|
| Title of host publication | Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| 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 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
Cite this
}
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 (Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Experimental and numerical studies about the effect of airflow on slider vibration with and without a disk damper
AU - Han, Ji Min
AU - Um, Yo Han
AU - Yoo, Jin Gyoo
AU - Rhim, Yoon Chul
PY - 2004/1/1
Y1 - 2004/1/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84934343394&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84934343394&partnerID=8YFLogxK
U2 - 10.1109/APMRC.2004.1521926
DO - 10.1109/APMRC.2004.1521926
M3 - Conference contribution
AN - SCOPUS:84934343394
T3 - Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004
BT - Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004
PB - Institute of Electrical and Electronics Engineers Inc.
ER -