For some complex slider designs the two dimensional approximation incorporated in the Reynolds equation for determining the airflow in the air bearing is not applicable due to steps in the air bearing surface. A model that incorporates some transverse flow effects is needed to better characterize the airflow between the slider and disk for some applications. In this paper such a model is derived to better predict the paths of contamination particles entrained in the air bearing. The characteristics of airflow and particle flow within the air bearing are then studied. The analysis including the transverse effects reveals that the transverse velocity of the air is not negligible in the geometric transition regions of the slider. This transverse velocity has a significant effect on the flight path of particles, and therefore, on the particle contamination profile on slider surfaces. The assumption of adhesion of the particles upon impact with a surface is used as the contamination criteria, and it is viewed as the worst-case scenario.
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e-mail: xshen@newton.me.berkeley.edu
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October 2004
Research Papers
Study of Transverse Flow Effects on Particle Flows and Contamination of Air Bearing Sliders
Xinjiang Shen, Graduate Student,,
e-mail: xshen@newton.me.berkeley.edu
Xinjiang Shen, Graduate Student,
Department of Mechanical Engineering, University of California at Berkeley, Berkeley CA 94720
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Mike Suk,
Mike Suk
Hitachi Global Storage Technologies, 5600 Cottle Road, San Jose, California 95193
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David B. Bogy, Fellow ASME,
David B. Bogy, Fellow ASME,
Department of Mechanical Engineering, University of California at Berkeley, Berkeley CA 94720
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Xinjiang Shen, Graduate Student,
Department of Mechanical Engineering, University of California at Berkeley, Berkeley CA 94720
e-mail: xshen@newton.me.berkeley.edu
Mike Suk
Hitachi Global Storage Technologies, 5600 Cottle Road, San Jose, California 95193
David B. Bogy, Fellow ASME,
Department of Mechanical Engineering, University of California at Berkeley, Berkeley CA 94720
Contributed by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY. Manuscript received by the Tribology Division June 5, 2003; revised manuscript received November 6, 2003. Associate Editor: J. L. Streator.
J. Tribol. Oct 2004, 126(4): 745-750 (6 pages)
Published Online: November 9, 2004
Article history
Received:
June 5, 2003
Revised:
November 6, 2003
Online:
November 9, 2004
Citation
Shen, X., Suk, M., and Bogy, D. B. (November 9, 2004). "Study of Transverse Flow Effects on Particle Flows and Contamination of Air Bearing Sliders ." ASME. J. Tribol. October 2004; 126(4): 745–750. https://doi.org/10.1115/1.1757489
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