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Behavior of a micron-sized air bubble in operating FDBs using the discrete phase modeling method

Title
Behavior of a micron-sized air bubble in operating FDBs using the discrete phase modeling method
Author
장건희
Keywords
Journal Bearing; Thrust Bearing; Groove Region; Discrete Phase Modeling; Finite Volume Model
Issue Date
2014-08
Publisher
Springer Science + Business Media
Citation
MICROSYSTEM TECHNOLOGIES, 2014, 20(8-9), pp. 1511-1521
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.
URI
http://link.springer.com/article/10.1007/s00542-014-2155-2http://hdl.handle.net/20.500.11754/47652
ISSN
0946-7076
DOI
10.1007/s00542-014-2155-2
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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