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A Model to Determine the Behaviour of a Pressure Measurement Equipment During Non-Static Operations of Gasturbine Engines FREE

[+] Author Affiliations
K.-U. Lemmer, J. Hass

University of the Federal Armed Forces, Hamburg, FRG

Paper No. 87-GT-128, pp. V005T14A005; 10 pages
doi:10.1115/87-GT-128
From:
  • ASME 1987 International Gas Turbine Conference and Exhibition
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Process Industries; General
  • Anaheim, California, USA, May 31–June 4, 1987
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7927-6
  • Copyright © 1987 by ASME

abstract

For some time there have existed different approaches and models by various authors to describe the behaviour of gasturbines during the transition between different operating points. A problem that has not been solved satisfactorily so far is the verification of these models with the help of exact data. Quite often one notices that the instruments do not react properly to the processs they are measuring: there is a time lag and the measured values become distorted by the measuring facility.

This paper is a contribution to the adjustments on gasturbine engines during non-static operations. A mathematical model has been developed to determine the influence of the different components on the measuring chain, which consist of a pressure measuring transducer with high natural frequency on a semiconductor base, a hose pipe and a pressure probe. This model has been verified by pressure measurements with a calibrating device. The final part is the discussion of the pressure values, which were measured on a gasturbine engine during the transition between different operating points and adjusted with the help of the mathematical model for the measuring chain.

Copyright © 1987 by ASME
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