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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 36, Iss. 35 — Dec. 10, 1997
  • pp: 9309–9318

In-line holographic particle image velocimetry for turbulent flows

John O. Scherer and Luis P. Bernal  »View Author Affiliations


Applied Optics, Vol. 36, Issue 35, pp. 9309-9318 (1997)
http://dx.doi.org/10.1364/AO.36.009309


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Abstract

A holographic system has been developed to measure the velocity field in three-dimensional flow regions. The system records the position of small tracer particles on two in-line holograms of the flow obtained simultaneously. Two exposures are recorded on each hologram. The flow velocity is derived from the displacement of the particles between exposures. A general design procedure is described for selecting the particle diameter and the concentration on the basis of the configuration of the flow facility and the resolution characteristics of the holographic imaging system. The system was implemented in a 2 ft × 2 ft (1 ft = 30.48 cm) water channel to measure the velocity field in a turbulent free-surface jet. The spatial resolution of the system is 1 mm, and the field of view is 100 mm, approximately. Measurements performed with this system are compared with results reported in the literature and are found to be in good agreement.

© 1997 Optical Society of America

History
Original Manuscript: September 11, 1995
Revised Manuscript: July 18, 1997
Published: December 10, 1997

Citation
John O. Scherer and Luis P. Bernal, "In-line holographic particle image velocimetry for turbulent flows," Appl. Opt. 36, 9309-9318 (1997)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-36-35-9309


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References

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