Computer Aided Discrimination of Slow and Fast Tracer Paths

  • H.-H. Bartels
  • W. J. Hiller
  • T. A. Kowalewski
Conference paper

Summary

An optical method for the discrimination between slow and fast tracer particles conveyed with a flow is proposed. It is based on the dependence of the brightness of a trace from the velocity of the corresponding tracer. The images are captured by a CCD-camera and processed on-line. A practical application to the visualization of low velocity streamlines in a rotating duct is presented. Attempts to develop this technique into a quantitative tool for velocity measurements will be discussed.

Keywords

Glycerol 

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References

  1. 1.
    Bartels-Lehnhoff, H.-H.; Hiller, W. J.; Kowalewski, T. A.: Computer aided Discrimination of slow and fast Tracer Paths. Accepted for publication in: Experiments in Fluids, 1992.Google Scholar
  2. 2.
    Brodkey, R. S.: Image processing and Analysis for Turbulence Research, Chem. Engr. Educ., 20 (1986) 202–207.Google Scholar
  3. 3.
    Jähne, B.: Digitale Bildverarbeitung. Berlin: Springer Verlag (1989)MATHCrossRefGoogle Scholar
  4. 4.
    Bartels-Lehnhoff. H.-H.: Erfassung dreidimensionaler Bahnlinien und Geschwindigkeitsfelder mittels automatischer Bildverarbeitung. Mitt. aus dem M. P. I. für Strömungsforschunq, Göttingen (1991) Nr. 101.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • H.-H. Bartels
    • 1
    • 2
  • W. J. Hiller
    • 1
  • T. A. Kowalewski
    • 1
  1. 1.Max-Planck-Institut für StrömungsforschungGöttingenGermany
  2. 2.Bayer A. G. Wuppertal-ElberfeldGermany

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