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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 21 — Jul. 20, 1999
  • pp: 4681–4690

Size, velocity, and concentration in suspension measurements of spherical droplets and cylindrical jets

Fabrice Onofri, Laurence Bergougnoux, Jean-Luc Firpo, and Jacqueline Misguich-Ripault  »View Author Affiliations


Applied Optics, Vol. 38, Issue 21, pp. 4681-4690 (1999)
http://dx.doi.org/10.1364/AO.38.004681


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Abstract

The principle of an optical technique for simultaneous velocity, size, and concentration in suspension measurements of spherical droplets and cylindrical jets is proposed. This technique is based on phase Doppler anemometry working in the dual burst technique configuration. The particle size and velocity are deduced from the reflected signal phase and frequency, whereas the amplitude ratio between the refracted and the reflected signals is used for measuring the concentration of small scatterers inside the particles. Numerical simulations, based on geometrical optics and a Monte Carlo model, and an experimental validation test on cylindrical jets made of various suspensions, are used to validate the principle of the proposed technique. It is believed that this new technique could be useful in investigating processes in which liquid suspensions are sprayed for surface coating, drying, or combustion applications.

© 1999 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(280.2490) Remote sensing and sensors : Flow diagnostics
(290.4210) Scattering : Multiple scattering
(290.7050) Scattering : Turbid media

History
Original Manuscript: January 4, 1999
Revised Manuscript: March 19, 1999
Published: July 20, 1999

Citation
Fabrice Onofri, Laurence Bergougnoux, Jean-Luc Firpo, and Jacqueline Misguich-Ripault, "Size, velocity, and concentration in suspension measurements of spherical droplets and cylindrical jets," Appl. Opt. 38, 4681-4690 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-21-4681

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