Optical Flow-Velocity Measurement in Irregularly Shaped Cavities

  • J. Larsen
  • K. G. Roesner

Summary

A nearly disturbance-free technique for the measurement of the velocity field of viscous liquids in closed and irregularly shaped cavities is described. This method is based on the photochromic effect. Up to now photochromism was used in experimental fluid dynamics to produce dye lines in a fluid with a photoactive additive of very low concentration. The present method uses a totally saturated solution of indolinespiropyran in a mixture of dekahydronaph-thalin and tetrahydronaphthalin. By means of a glass-fiber for the transmission of UV-light of 356 nm it is possible to color small fluid volumes inside the fluid at rest. The motion of the colored spots can be photographed by a movie camera. Thus path-lines of individual particles in the liquid can be determined when the whole body of the liquid is set into motion.

Keywords

Mercury Toluene Refraction Cataract Photolysis 

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References

  1. 1.
    Popovich, A.T.; Hummel, R.L.: A new method for non-disturbing turbulent flow measurements very close to the wall. Chem. Eng. Sc, Vol. 22 (1967) 21–25.CrossRefGoogle Scholar
  2. 2.
    Frantisak, F.; Palade de Iribarne, A.; Smith, J.W., and Hummel, R.L.: Nondisturbing tracer technique for quantitative measurements in turbulent flow. Ind. Eng. Chem. Fundamentals, Vol. 8 (1969) 160–167.CrossRefGoogle Scholar
  3. 3.
    Iribarne, A.; Frantisak, F.; Hummel, R.L.; Smith, J.W.: An Experimental Study of Instabilities and Other Flow Properties of a Laminar Pipe Jet. A.I. ChE.J. Vol. 18 (1972) 689–698.Google Scholar
  4. 4.
    Larsen, J.: A mathematical model of the oscillations in the aphakic eye. Bull. Math. Biology, Vol. 42 (1980) 837–845.MATHADSGoogle Scholar
  5. 5.
    Jacobi, K.W.; Jagger, W.S.: Physical Forces Involved in Pseudophacodonesis and Iridodonesis. Albrecht von Graefes Arch. Klin. Ophthalmol., Vol 216 (1981) 49–53.CrossRefGoogle Scholar
  6. 6.
    Taylor, L.D.: Composition and process utilizing photospirans. United States Patent Office, 3,320,067, Patented May 16 (1967).Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1982

Authors and Affiliations

  • J. Larsen
    • 1
    • 2
  • K. G. Roesner
    • 1
    • 2
  1. 1.Math-Tech InstituteCharlottenlundDenmark
  2. 2.Institut für Mechanik der Technischen Hochschule DarmstadtDarmstadtWest Germany

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