Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/14357
Title: Performance of vertical herringbone grooved hydrodynamic journal bearings
Authors: CARREN CLIEF RONDONUWU
Keywords: Hydrodynamic lubrication, Journal bearing, Herringbone grooves, Computational Fluid Dynamics.
Issue Date: 8-Nov-2004
Source: CARREN CLIEF RONDONUWU (2004-11-08). Performance of vertical herringbone grooved hydrodynamic journal bearings. ScholarBank@NUS Repository.
Abstract: The advantages of fluid bearings over ball bearings has led to the use of fluid bearing with herringbone grooved pattern in the hard-disk drive spindle motors. A test rig has been designed and fabricated to investigate the performance of vertical hydrodynamic herringbone-grooved journal bearings in terms of fluid sealing capability and axial pressure distributions for different patterns of herringbone groove on the journal at some rotational speeds.Computational simulations were also performed for herringbone-grooved journal bearings by using a commercially available computational fluid dynamic software at rotational speeds ranging from 203 to 2110 rpm. The computational simulations agree with the experimental results and theoretical expectations in terms of pressure distributions and side leakage rates. The discrepancies between experimental and computational results are due to the assumptions made in the simulations and the limitation of the experimental test rig.
URI: http://scholarbank.nus.edu.sg/handle/10635/14357
Appears in Collections:Master's Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
RondonuwuCC.pdf8.36 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

225
checked on Dec 11, 2017

Download(s)

217
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.