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Title: Performance of vertical herringbone grooved hydrodynamic journal bearings
Keywords: Hydrodynamic lubrication, Journal bearing, Herringbone grooves, Computational Fluid Dynamics.
Issue Date: 8-Nov-2004
Citation: 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.
Appears in Collections:Master's Theses (Open)

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