Experimental investigation of the complex flow behavior in a hard disk drive model

Katsuaki Shirai, Lars Büttner, Jürgen Czarske, Nobuo Shiga, Shinnosuke Obi

研究成果: Conference contribution

抄録

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.

本文言語English
ホスト出版物のタイトルDynamic Systems and Control; Mechatronics and Intelligent Machines
出版社American Society of Mechanical Engineers (ASME)
ページ1077-1084
ページ数8
PARTS A AND B
ISBN(印刷版)9780791854938
DOI
出版ステータスPublished - 2011
外部発表はい
イベントASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011 - Denver, CO, United States
継続期間: 2011 11 112011 11 17

出版物シリーズ

名前ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
番号PARTS A AND B
7

Other

OtherASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
国/地域United States
CityDenver, CO
Period11/11/1111/11/17

ASJC Scopus subject areas

  • 機械工学

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