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Three dimensional separation with spiral-focus in a decelerating duct flow (effect of asymmetric inlet boundary layer thickness)

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Abstract

An experimental apparatus was developed to study the three dimensional separated flow with spiral-foci. The internal decelerating flow was generated by the air suction from a side wall to produce the separation on an opposite-side wall. The relation between the upstream boundary layer and the generation of spiral-foci in the separation region was observed by a tuft method. As a result, it was clarified that the spiral-focus type separation could be produced on the side wall and its behavior was closely related to the vortices supplied into the separation region from the boundary layer developing along top wall or bottom one.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Saga University, 1, Honjo, 840-8502, Saga, Japan

    Yoichi Kinoue, Toshiaki Setoguchi, Kenji Kaneko & Mamun Mohammad

  2. Department of Mechanical Engineering Science, Kyushu University, 6-10-1, Hakozaki, Higashi-ku, 812-8581, Fukuoka, Japan

    Masahiro Inoue

Authors
  1. Yoichi Kinoue
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  2. Toshiaki Setoguchi
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  3. Kenji Kaneko
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  4. Mamun Mohammad
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  5. Masahiro Inoue
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Kinoue, Y., Setoguchi, T., Kaneko, K. et al. Three dimensional separation with spiral-focus in a decelerating duct flow (effect of asymmetric inlet boundary layer thickness). J. of Therm. Sci. 12, 27–32 (2003). https://doi.org/10.1007/s11630-003-0005-0

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  • DOI: https://doi.org/10.1007/s11630-003-0005-0

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