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Size of annular separation bubble around the inlet corner and viscous flow structure between two parallel disks

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Abstract

The annular separation bubble around the inlet corner and the radial flow between two parallel disks were investigated by means of flow visualization and numerical simulations to gain an understanding of the features of axisymmetric separation and reattachment in the inlet region. For the case with a sharp corner, the radius of the reattachment point depends only on clearance ratio, independent of Reynolds number in the turbulent flow regime where the reattachment point fluctuates randomly. For the cases with a rounded corner, the radius of reattachment point and the height of the bubble decrease with increasing corner roundness.

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Authors and Affiliations

  1. Department of Mechanical Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan e-mail: nakabaya@cfd.mech.nitech.ac.jp Tel.: +81-52-7355323; Fax: +81-52-7355342, , , , , , JP

    K. Nakabayashi

  2. Department of Mechanical Engineering Daido Institute of Technology, Takiharu-cho Minami-ku, Nagoya 457-0819, Japan, , , , , , JP

    T. Ichikawa

  3. Department of Mechanical Engineering Nagoya Institute of Technology, Gokiso-cho Showa-ku, Nagoya 466-8555, Japan, , , , , , JP

    Y. Morinishi

Authors
  1. K. Nakabayashi
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  2. T. Ichikawa
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  3. Y. Morinishi
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Received: 23 January 2001 / Accepted: 31 August 2001

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Nakabayashi, K., Ichikawa, T. & Morinishi, Y. Size of annular separation bubble around the inlet corner and viscous flow structure between two parallel disks. Experiments in Fluids 32, 425–433 (2002). https://doi.org/10.1007/s00348-001-0370-y

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  • DOI: https://doi.org/10.1007/s00348-001-0370-y

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