An Interferometric Study on Vortex Shedding from Trapezoidal Prisms in Transonic Flow

  • Takeo Nakagawa
Conference paper


An interferometric study has been performed to examine the influence of shape on vortex shedding from quasi-twodimensional prisms at high Reynolds number and high subsonic Mach number. It is found that overall scale of the vortex formation region, which is the space just behind a prism enclosed by the upper and lower separating shear layers, governs the vortex shedding phenomena: As scale of the vortex formation region increases, amplitude and way of the pressure variation with time become larger and more regular respectively, and the pressure spectrum at the fundamental frequency becomes larger, but the fundamental frequency itself decreases.


Test Section High Reynolds Number Bluff Body Transonic Flow Array Processor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Kronauer, R. E.; A paper presented at IUTAM Conference on concentrated vortex motions. Ann Arbor (1964) 101-115.Google Scholar
  2. 2.
    Koch, W.; Local instability characteristics and frequency determination of self-excited wake flows. J. Sound & Vibration, 99 (1905) 1–25.Google Scholar
  3. 3.
    Rosenhead, L; Vortex systems in wakes. Advances in Applied Mechanics, 3 (1953) 183–195.CrossRefGoogle Scholar
  4. 4.
    Nakagawa, T.; Vortex shedding behind a square cylinder in transonic flows. J. Fluid Mech. 178 (1987) 303–323.CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • Takeo Nakagawa
    • 1
  1. 1.Kanazawa Institute of TechnologyKanazawa, Ishikawa 921Japan

Personalised recommendations