Abstract
Flow inside a hard-disk drive (HDD) is investigated using a simplified 3.5″ HDD model with shroud opening and read-and-write arm (RWA). The model is designed to serve as a benchmark of HDD flow study both in experiments and in numerical simulations. The complex flow behavior in the narrow disk-to-disk space is focused with the RWA inserted into the space. The velocity statistics are acquired at totally 8 different locations using a velocity profile sensor with a spatial slot resolution of 30 μm along the axial direction. The measurement was carried out at the disk Reynolds number Red=2. 4×105 which corresponds to the rotation speed of 7700 rpm at a real 3.5″ HDD for desktop computers. The resulting mean velocities and Reynolds stress components are influenced by the shroud opening and especially by the RWA, compared to an axisymmetric model without an RWA. The highly sheared flow between the RWA and adjacent upper/lower disk was successfully captured in the experiment.
| Original language | English |
|---|---|
| Title of host publication | ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011 |
| Pages | 1077-1084 |
| Number of pages | 8 |
| Volume | 7 |
| Edition | PARTS A AND B |
| Publication status | Published - 2011 |
| Externally published | Yes |
| Event | ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011 - Denver, CO, United States Duration: 2011 Nov 11 → 2011 Nov 17 |
Other
| Other | ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011 |
|---|---|
| Country | United States |
| City | Denver, CO |
| Period | 11/11/11 → 11/11/17 |
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ASJC Scopus subject areas
- Mechanical Engineering
Cite this
Experimental investigation of the complex flow behavior in a hard disk drive model. / Shirai, Katsuaki; Büttner, Lars; Czarske, Jürgen; Shiga, Nobuo; Obi, Shinnosuke.
ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011. Vol. 7 PARTS A AND B. ed. 2011. p. 1077-1084.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Experimental investigation of the complex flow behavior in a hard disk drive model
AU - Shirai, Katsuaki
AU - Büttner, Lars
AU - Czarske, Jürgen
AU - Shiga, Nobuo
AU - Obi, Shinnosuke
PY - 2011
Y1 - 2011
N2 - Flow inside a hard-disk drive (HDD) is investigated using a simplified 3.5″ HDD model with shroud opening and read-and-write arm (RWA). The model is designed to serve as a benchmark of HDD flow study both in experiments and in numerical simulations. The complex flow behavior in the narrow disk-to-disk space is focused with the RWA inserted into the space. The velocity statistics are acquired at totally 8 different locations using a velocity profile sensor with a spatial slot resolution of 30 μm along the axial direction. The measurement was carried out at the disk Reynolds number Red=2. 4×105 which corresponds to the rotation speed of 7700 rpm at a real 3.5″ HDD for desktop computers. The resulting mean velocities and Reynolds stress components are influenced by the shroud opening and especially by the RWA, compared to an axisymmetric model without an RWA. The highly sheared flow between the RWA and adjacent upper/lower disk was successfully captured in the experiment.
AB - Flow inside a hard-disk drive (HDD) is investigated using a simplified 3.5″ HDD model with shroud opening and read-and-write arm (RWA). The model is designed to serve as a benchmark of HDD flow study both in experiments and in numerical simulations. The complex flow behavior in the narrow disk-to-disk space is focused with the RWA inserted into the space. The velocity statistics are acquired at totally 8 different locations using a velocity profile sensor with a spatial slot resolution of 30 μm along the axial direction. The measurement was carried out at the disk Reynolds number Red=2. 4×105 which corresponds to the rotation speed of 7700 rpm at a real 3.5″ HDD for desktop computers. The resulting mean velocities and Reynolds stress components are influenced by the shroud opening and especially by the RWA, compared to an axisymmetric model without an RWA. The highly sheared flow between the RWA and adjacent upper/lower disk was successfully captured in the experiment.
UR - http://www.scopus.com/inward/record.url?scp=84869175861&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84869175861&partnerID=8YFLogxK
M3 - Conference contribution
SN - 9780791854938
VL - 7
SP - 1077
EP - 1084
BT - ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
ER -