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Combined effects of fluid inertia forces and non-Newtonian rheology in circular stepped squeeze film disks

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Abstract

Based on the Stokes microcontinuum fluid model together with the averaged inertia principle, the combined effects of fluid inertia forces and non-Newtonian rheology on the squeeze film characteristics between circular stepped disks have been presented in this paper. Comparing with the case of a Newtonian lubricant without inertia forces, the influences of convective inertia forces and non-Newtonian couple stresses provide an increase in values of the load-carrying capacity and the approaching time. The improved performances are more pronounced for stepped squeeze films operating with a larger density parameter and couple stress parameter, and a smaller step height ratio and radius ratio.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Taoyuan Innovation Institute of Technology, No. 414, Sec. 3, Jhongshan E. Rd., Jhongli, 320, Taiwan

    Jaw-Ren Lin

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  1. Jaw-Ren Lin
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Correspondence to Jaw-Ren Lin.

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Lin, JR. Combined effects of fluid inertia forces and non-Newtonian rheology in circular stepped squeeze film disks. J Eng Math 92, 45–54 (2015). https://doi.org/10.1007/s10665-015-9781-2

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  • DOI: https://doi.org/10.1007/s10665-015-9781-2

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