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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 2, Iss. 10 — Oct. 1, 1985
  • pp: 1721–1724

Particle-image velocimetry: improving fringe signal-to-noise ratio with a two-step photographic process. Part II

C. J. D. Pickering and N. A. Halliwell  »View Author Affiliations


JOSA A, Vol. 2, Issue 10, pp. 1721-1724 (1985)
http://dx.doi.org/10.1364/JOSAA.2.001721


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Abstract

In using particle-image velocimetry (PIV) to obtain an instantaneous two-dimensional velocity map in a fluid flow, a double-exposure photograph of the seeded medium is analyzed optically to produce correlation fringes. In an earlier paper we showed theoretically that the signal-to-noise ratio of these fringes, and hence measurement accuracy, is significantly improved by using a two-step photographic process. In this paper, experimental results are presented that support the previous theoretical work and reveal the great potential of PIV in experimental fluid mechanics.

© 1985 Optical Society of America

History
Original Manuscript: March 11, 1985
Manuscript Accepted: May 6, 1985
Published: October 1, 1985

Citation
C. J. D. Pickering and N. A. Halliwell, "Particle-image velocimetry: improving fringe signal-to-noise ratio with a two-step photographic process. Part II," J. Opt. Soc. Am. A 2, 1721-1724 (1985)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-2-10-1721


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References

  1. C. J. D. Pickering, N. A. Halliwell, “Particle image velocimetry: Improving fringe signal-to-noise with a two-step photographic process,” J. Opt. Soc. Am. A. 2, 610–615 (1985). [CrossRef]
  2. T. D. Dudderar, P. G. Simpkins, “Laser speckle photography in a fluid medium,” Nature (London) 270, 45–46 (1977). [CrossRef]
  3. J. M. Burch, J. M. J. Tokarski, “Production of multiple beam fringes from photographic scatterers,” Opt. Acta 15, 101–111 (1968).
  4. C. J. D. Pickering, N. A. Halliwell, “Speckle photography in fluid flows: signal recovery with two-step processing,” Appl. Opt. 23, 1128–1129 (1984). [CrossRef] [PubMed]
  5. C. J. D. Pickering, N. A. Halliwell, “Laser speckle photography and particle image velocimetry: photographic film noise,” Appl. Opt. 23, 2961–2969 (1984). [CrossRef] [PubMed]
  6. D. W. Robinson, “Automatic fringe analysis with a computer image-processing system,” Appl. Opt. 22, 2169–2175 (1984). [CrossRef]
  7. R. Meynart, “Instantaneous velocity field measurements in unsteady gas flow by speckle velocimetry,” Appl. Opt. 22, 535–540 (1983). [CrossRef] [PubMed]

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