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Investigation of the Transonic Calibration Characteristics of Turbine Static Pressure Probes PUBLIC ACCESS

[+] Author Affiliations
R. W. Langford, K. R. Keeley, N. B. Wood

Central Electricity Research Labs., Leatherhead, Surrey, England

Paper No. 82-GT-280, pp. V001T01A093; 9 pages
doi:10.1115/82-GT-280
From:
  • ASME 1982 International Gas Turbine Conference and Exhibit
  • Volume 1: Turbomachinery
  • London, England, April 18–22, 1982
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7956-6
  • Copyright © 1982 by ASME

abstract

Measurement of static pressure in transonic turbines is made difficult because of the need to use probes with substantial support stems in the measurement plane, enabling them to traverse in the confined axial spaces between blade rows. Problems arise because of shock interactions with the probes and the close proximity of shock-reflecting surfaces. Tests show that the calibration can depend on the proportion of probe support immersed in the transonic flow. The wind tunnel gives only partial representation of the turbine transonic flow field, but by using turbine measured and computed static pressures the most representative calibration is selected.

Copyright © 1982 by ASME
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