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Experience with Laboratory LDA by Measuring Flow Fields in Rotating Turbomachinery

  • J. Gardavský
  • V. Daněk
  • J. Máša
  • J. Plášek
Conference paper
Part of the International Union of Theoretical and Applied Mechanics book series (IUTAM)

Summary

The developed laboratory LDA system is operated at the one-color dual-beam mode with the confocal annular detection and polarizational separation of the backscattered Doppler signal, allowing for the measurements of the axial or tangential velocity components up to 600 m/s in the absolute coordinates. Doppler signals between the blade passages are gated and evaluated by a counter. The operation of the system will be illustrated by measurements of the axial flow field velocity component at the impeller of a research turbocharger.

Keywords

Doppler Signal Centrifugal Compressor Laser Doppler Anemometry Axial Velocity Profile Beam Intersection 
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.

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References

  1. 1.
    Weyer, H.B.; Optical methods of flow measurement and visualization in rotors» Joint Fluid Engn. Gas Turbine Conf. and Products Show, New Orleans, Louisiana 1980Google Scholar
  2. 2.
    Runstadler, P.W., Jr.; Special applications and new technical aspects of laser anemometry. Creare TN-241, 1976Google Scholar
  3. 3.
    Dolan, F.X.; LeBlanc, F.R.; Runstadlert P.W., Jr.; Design, development, and test of a laser velocimeter for high speed turbomachinery. Creare TN-234, 1975Google Scholar
  4. 4.
    Abbis, J.B.: Photon correlation velocimetry in aerodynamics. NATO Advanced Study Institute Seminar on Photon Correlation Spectroscopy and Velocimetry, Capri 1976.Google Scholar
  5. 5.
    Durao, F.G.; Whitelaw, J.H.; Goulas, A.; Measured velocity characteristics of the flow in the impeller of a centrifugal compressor. ASME Pub. No.79-HT-32.Google Scholar
  6. 6.
    Adler, D.; Levy, Y.; A laser-Doppler investigation of the flow inside a backswept, closed, centrifugal impeller. J. Mech. Engng Science, 21 (1979) 1.CrossRefADSGoogle Scholar
  7. 7.
    Alios, T.I.; Elder, R.L.; Measurement of flow velocity in the vaneless diffuser of a high speed centrifugal compressor using a laser Doppler anemometer. Opt.Acta 27 (1980) 119,Google Scholar
  8. 8.
    Walter, K.; Larsen, P.S.; LDA counter processor application to turbomachinery. DISA Inf., Feb.1980, 25.Google Scholar
  9. 9.
    Eckardt, D.; Detailed flow investigation within a high speed centrifugal compressor impeller. J. Fluid. Engng, Trans. ASME, Series I (1976) 98.Google Scholar
  10. 10.
    Labbe, J.; Janssens, G.; Avram, P.; Preliminary experiments on a centrifugal research compressor using a lasers-focus velocimeter. ONERA T.P. No.1982-62.Google Scholar
  11. 11.
    Durst, F.; Meiling, A.; Whitelaw, J.H.; Principles and Practice of Laser Doppler Anemometry. Academic Press, New York, 1976.Google Scholar
  12. 12.
    Schodl, R; Laser dual beam method for flow measurements in turbomachines. ASME Paper No.74-GT-157#Google Scholar
  13. 13.
    Walker, D. A.; Williams, M.C.; House, R.D.: Interblade velocity measurements in a transonic fan utilizing a laser Doppler velocimeter. Minesota Symp«on Laser Anemometry, university Minnesota, 1973.Google Scholar
  14. 14.
    Gardavský, J.; Kleine, R.; Reflection suppression by pola-rization m backscatter LDA measurements near walls and in two-phaat flows. Applied Optics 20 (1981) 4110, and Int.Symp.Applications of Laser-Doppler Anemometry to Fluid Mechanics, Lisboa 1982.Google Scholar
  15. 15.
    Lading, L.: A Fourier optical model for the laser Doppler velocimeter. Opto-electronics (1972) 385.Google Scholar
  16. 16.
    Gardavský, J.; Bok, J.; Scattering of circularly polarized light in laser-Doppler anemometry. Applied Optics 21 (1982) 158.CrossRefADSGoogle Scholar
  17. 17.
    Glass, M.; Kennedy, I.M.: An improved seeding method for high temperature laser Doppler velocimetry. Combustion and Flame 29 (1977) 333.CrossRefGoogle Scholar

Copyright information

© Springer-Verlag, Berlin, Heidelberg 1985

Authors and Affiliations

  • J. Gardavský
    • 1
  • V. Daněk
    • 2
  • J. Máša
    • 2
  • J. Plášek
    • 1
  1. 1.Institute of PhysicsCharles UniversityPrague 2Czech Republic
  2. 2.Compressors Research and Development DivisionČKD PrahaPrague 9Czech Republic

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