Behavior of a micron-sized air bubble in operating FDBs using the discrete phase modeling method
- Authors
- Jung, Yeonha; Jang, Gunhee; Jung, Kyungmoon; Kang, Chiho; Shin, Hyunho
- Issue Date
- Aug-2014
- Publisher
- SPRINGER HEIDELBERG
- Citation
- MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS, v.20, no.8-9, pp.1511 - 1521
- Indexed
- SCIE
SCOPUS
- Journal Title
- MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
- Volume
- 20
- Number
- 8-9
- Start Page
- 1511
- End Page
- 1521
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/159407
- DOI
- 10.1007/s00542-014-2155-2
- ISSN
- 0946-7076
- Abstract
- This paper investigates the motion of a micron-sized air bubble in the operating fluid dynamic bearings (FDBs) of a spindle motor in a computer hard disk drive. The flow field of FDBs is calculated by solving the Navier-Stokes equation and the continuity equation. The two-phase flow in the air-oil interface is simultaneously solved by using the finite volume method and the volume of fluid (VOF) method. We then analyze the motion of a micron-sized air bubble by applying the discrete phase modeling (DPM) method to the calculated flow field of FDBs. The motion of a micron-sized air bubble determined using the DPM method is verified by comparison with the trajectory of the micron-sized air bubble determined using the VOF method. The trajectories of a micron-sized air bubble with different initial positions in the FDBs are discussed.
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