Visible Infra-Red Double Extinction Measurements in Densely Laden Media, New Progress

  • G. Gouesbet
  • P. Gougeon
  • J. N. Le Toulouzan
  • M. Thioye
  • J. B. Guidt


Optical techniques for measurements of particle sizes and concentrations are usually limited to the investigation of low optical thickness media. For instance, in LDA-based systems, it is generally required, as a rule of thumb, that the control volume should not contain simultaneously more than one particle. Furthermore, the incoming beams to produce the optical probe and the outgoing scattered light must not be spoiled by the presence on the optical pathes of a too large amount of refractive index inhomogeneities. Another example is Malvern diffractometry (1,2, among many others). Recent developments in this technique, including multiple scattering corrections, permit to investigate media for which the transmittance is as small as 2% (3,4), corresponding to an optical thickness equal to 4. Although other progress are likely, optical thicknesses limitations are expected to be encountered in a near future (a dangerous statement indeed).


Optical Thickness Coal Particle Glass Particle Dust Explosion Dense Spray 
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.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    P.G. Felton, A.A. Hamidi, and A.K. Aigal. Measurement of drop size distribution in dense sprays by laser diffraction, Proceedings of ICLASS’85 (Institute of Energy), London (1985).Google Scholar
  2. 2.
    D. Allano, M. Ledoux, and D. Lisiecki. Etude de quelques aspects de l’utilisation du granulometre ST 2200. 6th International Congress of the International Society for Aerosols in Medicine, Oct 2–4, Vichy, France (1986).Google Scholar
  3. 3.
    E.D. Hirleman. Modeling of multiple scattering effects in Fraunhofer diffraction particle size analysis. Spring Meeting, Western States Section, The Combustion Institute, April 27–29, Banff, Alberta, Canada, 1986.Google Scholar
  4. 4.
    A.A. Hamidi and J. Swithenbank. Treatment of multiple scattering of light in laser diffraction measurement technique in dense sprays and particle fields. Journal of the Institute of Energy, June, 101, 1986.Google Scholar
  5. 5.
    P. Gougeon, J.N. Le Toulouzan, C. Thenard, and G. Gouesbet. Simultaneous measurements of sizes and concentrations of coal particles in multiple scattering media by means of a double extinction technique. Proceedings of the Conference organized by the Particle Size Group of the Analytical Division of the Royal Society of Chemistry, Sept 16–19, Bradford, England, 1985.Google Scholar
  6. 6.
    G. Gouesbet, P. Gougeon, J.N. Le Toulouzan, B. Maheu and M. Thoye. New progress in optical diagnosis in densely laden flows. Proceedings of ICALEO’86, Nov. 10–13, Arlington, Virginia, Vol 58, Flow and Particle Diagnostics, 1986.Google Scholar
  7. 7.
    P. Gougeon, J.N. Le Toulouzan, G. Gouesbet, C. Thenard. Optical measurements of particle size and concentration in densely laden media using a visible infra-red double extinction technique, Journal of Scientific Instruments, To be published.Google Scholar
  8. 8.
    L.P. Bayvel and A.R. Jones. Electromagnetic scattering and its applications, Applied Science Publisher, London, 1981.CrossRefGoogle Scholar
  9. 9.
    B. Maheu, J.N. Le Toulouzan, and G. Gouesbet. Four-flux models to solve the scattering transfer equation in terms of Lorenz-Mie parameters, Applied Optics, 23, 3353, 1984.CrossRefGoogle Scholar
  10. 10.
    B. Maheu and G. Gouesbet. Four-flux models to solve the scattering transfer equation in terms of Lorenz-Mie parameters, special cases. Applied Optics, 25, 1122, 1985.CrossRefGoogle Scholar
  11. 11.
    G. Grehan and G. Gouesbet. Mie theory calculations: new progress, with emphasis on particle sizing. Applied Optics. 18, 3489, 1979.CrossRefGoogle Scholar
  12. 12.
    J.R. Birch, R.J. Cook, A.F. Harding, R.G. Jones and G.D. Price. The optical constants of ordinary glass from 0.29 to 4000 cm−1 J. Physics D: Applied Physics, 8, 1353, 1975.CrossRefGoogle Scholar
  13. 13.
    W. Ishihama and H. Enamoto. New experimental method for studies of dust explosions. Combustion and Flames, 21, 177, 1973.CrossRefGoogle Scholar
  14. 14.
    C. Thenard. Plasma de xenon cree par onde de choc: etude de la cinetique de creation des electrons par interferometrie submillimetrique. These d’Etat, Rouen, France, 1980.Google Scholar
  15. 15.
    P. Belland and D. Veron. A compact cw HCN laser with high stability and power output. Opt. Commun. 9, 146, 1973.CrossRefGoogle Scholar
  16. 16.
    J.R. Hodkinson. Aerosol Science. Academic Press, New-York, 1966.Google Scholar
  17. 17.
    R.O. Gumprecht and C.M. Sliepcevich. Scattering of light by large spherical particles. J. Phys. Chem. 57, 90, 1953.CrossRefGoogle Scholar
  18. 18.
    Z.G. Habib and P. Vervisch. The Mie theory and the nature of attenuation of thermal radiation in pulverized coal flames. NATO Workshop: Fundamentals of physical-chemistry of pulverized coal combustion. Les Arcs, France, July 1986.Google Scholar
  19. 19.
    Alpine. Service Instruction BV 390/15F. Alpine A 200LS, 1973.Google Scholar

Copyright information

© Springer Science+Business Media New York 1988

Authors and Affiliations

  • G. Gouesbet
    • 1
  • P. Gougeon
    • 1
  • J. N. Le Toulouzan
    • 1
  • M. Thioye
    • 1
  • J. B. Guidt
    • 1
  1. 1.Laboratoire d’Energétique des Systèmes et ProcédésINSA de Rouen, U.A. CNRS n°230Mont-Saint-AignanFrance

Personalised recommendations