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Unsteady Three-Dimensional Turbine Aerodynamics PUBLIC ACCESS

[+] Author Affiliations
H. D. Joslyn, R. P. Dring

United Technologies Research Center

O. P. Sharma

Pratt & Whitney Aircraft

Paper No. 82-GT-161, pp. V001T01A064; 13 pages
doi:10.1115/82-GT-161
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

High response aerodynamic measurements were made in a large scale, axial, flow turbine model to study the unsteadiness and three dimensionality of the flow. High response velocity vector and total pressure data were acquired. A comparison was made of the results of phase lock, averaging both raw and reduced data (voltages and velocities). The velocity vector measurements showed that there were strong radial flows present as well as significant periodic changes in the flow field due to relative rotor and vane positions. Random, periodic, and total unsteadiness levels were computed from the instantaneous and phase lock averaged velocity data. Time averaged data were compared with an inviscid two-dimensional calculation. A comparison was also made of time averaged total pressure measurements obtained from high response and low response (steady-state) probes.

Copyright © 1982 by ASME
This article is only available in the PDF format.

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