Skip to main content
SpringerLink
Log in

Vortex Shedding in Oscillatory Flow: Effects of Free-Stream Turbulence

  • Conference paper
Bluff-Body Wakes, Dynamics and Instabilities

Abstract

A comprehensive study of vortex shedding from bluff bodies in oscillatory flow has been undertaken (Al-Asmi [I], Al-Asmi & Castro [2]). This paper discusses a sub-set of the results, concentrating on the effects caused by the addition of free-stream turbulence. In particular, it is shown that, in the case of a triangular-shaped body, turbulence substantially increases the range of oscillatory driving frequencies (N) over which lock-in conditions occur, provided N is greater than twice the natural shedding frequency, no. The effects depend on the ratio of turbulence integral scale to body size, Lx/d, and the free-stream turbulence intensity, u’/Uo. Increasing either (or both) first extends the lock-in range but eventually leads to ‘saturation’, with further increases in u’/U0 causing a reduction in the extent of lock-in.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Log in via an institution
Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 84.99
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 109.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Al-Asmi, K: Vortex shedding in oscillatory flow. PhD Thesis, Univ.of Surrey, 1992

    Google Scholar 

  2. Al-Asmi, K.; Castro, I.P.: Vortex shedding in oscillatory flow: Geometrical effects. Flow Meas. and Inst. (in press), 1992.

    Google Scholar 

  3. Hatfield, H.M.; Morkovin, M.V.: Effect of an oscillating free stream on the unsteady pressure on a circular cylinder. J.Fluids Eng. (1973) 249–252.

    Google Scholar 

  4. Griffin, O.M.; Ramberg, S.E.: Vortex shedding from a cylinder vibrating in line with an incident uniform flow. J.Fluid Mech. 75 (1976) 257–271

    Article  ADS  Google Scholar 

  5. Barnes, F.H.; Grant, I.: Vortex shedding in unsteady flow. J.Wind Eng.Ind.Aero. 11 (1983) 335–344.

    Article  Google Scholar 

  6. Barbi, C.; Favier, D.P.; Maresca, C.A.; Telionis, D.P.: Vortex shedding and lock-on of a circular cylinder in oscillatory flow. J.Fluid Mech. 170 (1986) 527–544.

    Article  ADS  Google Scholar 

  7. Al-Asmi, K.; Castro, I.P.: The production of oscillatory flow in wind tunnels. Submitted to Expt.in Fluids.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, University of Surrey, UK

    Khalfan Al-Asmi & Ian P. Castro

Authors
  1. Khalfan Al-Asmi
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Ian P. Castro
    View author publications

    You can also search for this author in PubMed Google Scholar

Editor information

Editors and Affiliations

  1. Institut für Angewandte Mechanik und Strömungsphysik, Universität Göttingen und Max-Planck-Institut für Strömungsforschung, Bunsenstraße 10, 37073, Göttingen, Germany

    Helmut Eckelmann

  2. Department of Aeronautics, Imperial College of Science, Technology and Medicine, SW72BY, South Kensington, London, UK

    J. Michael R. Graham

  3. Laboratoire d’Hydrodynamique (LADHYX), Ecole Polytechnique, 91128, Palaiseau Cedex, France

    Patrick Huerre

  4. Mechanical, Aerospace and Nuclear Engineering Dept., University of California, Los Angeles, 405 Hilgard Ave., 90024-1597, Los Angeles, CA, USA

    Peter A. Monkewitz

Rights and permissions

Reprints and permissions

Copyright information

© 1993 Springer-Verlag Berlin Heidelberg

About this paper

Cite this paper

Al-Asmi, K., Castro, I.P. (1993). Vortex Shedding in Oscillatory Flow: Effects of Free-Stream Turbulence. In: Eckelmann, H., Graham, J.M.R., Huerre, P., Monkewitz, P.A. (eds) Bluff-Body Wakes, Dynamics and Instabilities. International Union of Theoretical and Applied Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-00414-2_29

Download citation

  • DOI: https://doi.org/10.1007/978-3-662-00414-2_29

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-662-00416-6

  • Online ISBN: 978-3-662-00414-2

  • eBook Packages: Springer Book Archive

Publish with us

Policies and ethics

Search

Navigation