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Unsteady viscous flows past blunt bodies at moderate Reynolds numbers

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Abstract

Unsteady viscous flows past blunt bodies are simulated at the Reynolds numbers of 100, 200, 300, and 400. This research focuses on understanding the effects of the Reynolds numbers and blunt body shapes on the unsteady lift and drag forces. The incompressible Navier-Stokes flow solver, which employs the SIMPLER method in the two-dimensional body-intrinsic orthogonal curvilinear coordinate system, is verified by comparing the present numerical results with currently available experimental and numerical data. In conclusion, it is observed that the body shapes and the Reynolds numbers affect significantly the frequencies of the force oscillations as well as the mean values and the amplitudes of the drag and lift force oscillations.

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Authors and Affiliations

  1. School of Aerospace and Mechanical Engineering, Korea Aerospace University, Kyungki-Do, 412-791, Korea

    Moon-Sang Kim, Hae-Moon Jeon & Yeong-Taek Lim

Authors
  1. Moon-Sang Kim
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  2. Hae-Moon Jeon
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  3. Yeong-Taek Lim
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Correspondence to Moon-Sang Kim.

Additional information

This paper was recommended for publication in revised form by Associate Editor Kyung-Soo Yang

Moon-Sang Kim received his B.S. degree from Seoul National University Bachelor, M.S. in KAIST, and Ph.D. in Uni-versity of Illinois at Urbana-Champaign. He served at an engineer at Korea Power En-gineering Inc., and a Senior En-gineer at the Agency for Defense Development. He is currently a professor of Korea Aerospace University.

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Kim, MS., Jeon, HM. & Lim, YT. Unsteady viscous flows past blunt bodies at moderate Reynolds numbers. J Mech Sci Technol 22, 2286–2298 (2008). https://doi.org/10.1007/s12206-008-0618-z

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  • DOI: https://doi.org/10.1007/s12206-008-0618-z

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