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Control of laminar vortex shedding behind a circular cylinder using tabs

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Abstract

Small, thin flat plates (called tabs hereafter) are attached to the upper and lower surfaces of a circular cylinder to control vortex shedding and reduce the mean drag and lift fluctuations at the Reynolds number of 100. We vary the location and size of the tabs and the distance between the adjacent tabs. The maximum amount of drag reduction by the tabs is 17%. It is found that the tabs perturb twodimensional vortex shedding and introduce spanwise mismatch of vortex shedding, which weakens the strength of vortex shedding or even annihilates vortex shedding. The present result suggests that these tabs are an effective passive device for the control of vortex shedding behind two-dimensional bluff bodies.

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Authors and Affiliations

  1. Department of Mechanical & Aerospace Engineering, Seoul National University, Seoul, 151-744, Korea

    Jeeun Yoon & Haecheon Choi

  2. Department of Mechanical System Design Engineering, Seoul National University of Science & Technology, Seoul, 139-743, Korea

    Jungwoo Kim

  3. Institute of Advanced Machinery and Design, Seoul National University, Seoul, 151-744, Korea

    Haecheon Choi

Authors
  1. Jeeun Yoon
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  2. Jungwoo Kim
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  3. Haecheon Choi
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Corresponding author

Correspondence to Haecheon Choi.

Additional information

Recommended by Editor Dongshin Shin

Jungwoo Kim obtained his B.S., M.S. degrees and Ph.D. at the Department of Mechanical Engineering, Seoul National University, Korea, in 1999, 2001 and 2005, respectively. Dr. Kim is currently an assistant professor at the Department of Mechanical System Design Engineering, Seoul National University of Science and Technology.

Haecheon Choi obtained his B.S. and M.S. degrees at the Department of Mechanical Engineering, Seoul National University, Korea, in 1985 and 1987, respectively. He received his Ph.D. from Stanford University in 1992. Dr. Choi is currently a professor at the School of Mechanical and Aerospace Engineering, Seoul National University. His research interests include turbulence, flow control, CFD, and bio-mimetic engineering.

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Yoon, J., Kim, J. & Choi, H. Control of laminar vortex shedding behind a circular cylinder using tabs. J Mech Sci Technol 28, 1721–1725 (2014). https://doi.org/10.1007/s12206-014-0317-x

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  • DOI: https://doi.org/10.1007/s12206-014-0317-x

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