Experiments in Fluids

, Volume 20, Issue 2, pp 91–99 | Cite as

An interferometric study of organized structures in wakes of circular cylinders

  • S. Zhong
  • L. C. Squire
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Abstract

Double-pulse, diffuse-illumination interferometry has been used to study the organized structures in the wake of a circular cylinder (M = 0.6,Re d = 300,000). The interferograms show striking similarities to the flow visualization pictures of the incompressible wakes of circular cylinders as obtained by other investigators. In particular, the interferograms taken with very short pulse intervals show concentrations of fine scale turbulence in the von Karman vortices and the existence of streamwise vortices between these counter-rotating largescale vortices. The fact that most of the features observed in low speed wakes using a variety of techniques can be observed in the interferograms illustrated the potential of interferometry for the study of turbulent structures in compressible flows.

Keywords

Vortex Organize Structure Circular Cylinder Short Pulse Fine Scale 
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.
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Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • S. Zhong
    • 1
  • L. C. Squire
    • 1
  1. 1.Engineering DepartmentCambridge UniversityCambridgeUK

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