Experiments in Fluids

, Volume 14, Issue 4, pp 271–276 | Cite as

Calibrated multichannel electronic interferometry for quantitative flow visualization

  • T. D. Upton
  • D. W. Watt
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Abstract

Calibrated multichannel electronic interferometry, a new technique for quantitative flow visualization of transient phenomena, is discussed. This technique uses an interferometer combined with diffraction gratings to generate three phase shifted interferograms simultaneously which are used to perform multichannel phase shifting. The optical system is calibrated with no phase object present using standard piezoelectric phase shifting, and this calibration information is stored as an electro-optic hologram. The calibration information is used along with the three phase-shifted interferograms that exist with a phase object present to perform time-resolved phase shifting. Examples using natural convection and separated flows are presented.

Keywords

Convection Optical System Natural Convection Flow Visualization Separate Flow 
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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References

  1. Creath, K. 1988: Phase-measurement interferometry techniques. Prog. Opt. 26, 349–393Google Scholar
  2. Dändliker, R.; Thalmann, R. 1985: Heterodyne and quasi-heterodyne holographic interferometry. Opt. Eng. 24, 824–831Google Scholar
  3. Hariharan, P. 1985: Quasi-heterodyne holographic interferometry. Opt. Eng. 24, 632–638Google Scholar
  4. Jüptner, W.; Kreis, T. M.; Kreitlow, H. 1983: Automatic evaluation of holographic interferograms by reference beam phase shifting. SPIE 398, 22–29Google Scholar
  5. Kujawinska, M.; Robinson, D. W. 1988: Multichannel phase-stepped holographic interferometry. Appl. Opt. 27, 312–320Google Scholar
  6. Lanen, T. A. W. M.; Nebbeling, C.; van Ingen, J. L. 1990: Digital phase-stepping holographic interferometry in measuring 2-D density fields. Exp. Fluids 9, 231–235Google Scholar
  7. Merzkirch, W. 1987: Flow Visualization. New York: Academic PressGoogle Scholar
  8. Raber, R. S. 1991: Electro-optic interferometry with noise tolerant phase unwrapping. M. S. Thesis, Department of Mechanical Engineering, The University of New Hampshire, Durham/NHGoogle Scholar
  9. Shough, D. M.; Kwon, O. Y. 1987: Phase-shifting pulsed-laser interferometer. SPIE 739, 174–180Google Scholar
  10. Snyder, R. 1988: Instantaneous three-dimensional optical tomographic measurements of species concentration in a co-flowing jet. Ph. D. Thesis, Department of Aeronautics and Astronautics, Stanford University, Stanford/CAGoogle Scholar
  11. Stetson, K. A.; Brohinsky, W. R.; Wahid, J.; Bushman, T. 1989: Electro-optic holography system with real-time arithmetic processing. J. Nondestr. Eval. 8, 69–76Google Scholar
  12. Takeda, M.; Ina, H.; Kobayashi, S. 1982: Fourier-transform method of fringe-pattern analysis for computer-based tomography and interferometry. J. Opt. Soc. Am. 72, 156–160Google Scholar
  13. Vest, C. M. 1979: Holographic interferometry. New York: WileyGoogle Scholar
  14. Watt, D. W.; Vest, C. M. 1987: Digital interferometry for flow visualization. Exp. Fluids 5, 401–406Google Scholar

Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • T. D. Upton
    • 1
  • D. W. Watt
    • 1
  1. 1.Dept. of Mechanical EngineeringThe University of New HampshireDurhamUSA

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