The Application of Particle Image Velocimetry (PIV) in a Short Duration Transonic Annular Turbine Cascade PUBLIC ACCESS

[+] Author Affiliations
P. J. Bryanston-Cross, C. E. Towers, T. R. Judge, D. P. Towers

University of Warwick, Coventry, UK

S. P. Harasgama, S. T. Hopwood

Royal Aerospace Establishment, Farnborough, Hampshire, UK

Paper No. 91-GT-221, pp. V001T01A078; 7 pages
  • ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 1: Turbomachinery
  • Orlando, Florida, USA, June 3–6, 1991
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7898-9
  • Copyright © 1991 by ASME


A series of experiments have been performed to demonstrate the application of Particle Image Velocimetry (PIV) to turbomachinery flows. The tests were performed at transonic speeds on a fully annular engine size turbine nozzle guide vane. The vane cascade was installed in a short duration Isentropic Light Piston Cascade (ILPC) test facility operating with high inlet turbulence levels.

The technique has been shown to map the whole flow field with a resolution of 0.5 mm. The quality of the results obtained are not significantly affected by local turbulence rates. The accuracy of the measurements is put at around 4% of absolute velocity and is limited by the quality of the image on the film plane.

The velocities derived from the PIV images have been compared with predictions from a three-dimensional viscous numerical calculation. It is shown that the experimental and predicted results are in good agreement. It is considered that this technique has considerable potential in application to turbomachinery flow field diagnostics.

Copyright © 1991 by ASME
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