Simulation of Surge Margin Changes due to Heat Transfer Effects in Gas Turbine Transients PUBLIC ACCESS

[+] Author Affiliations
Jaakko Larjola

Lappeenranta University of Technology, Lappeenranta, Finland

Paper No. 84-GT-129, pp. V002T04A003; 8 pages
  • ASME 1984 International Gas Turbine Conference and Exhibit
  • Volume 2: Aircraft Engine; Marine; Microturbines and Small Turbomachinery
  • Amsterdam, The Netherlands, June 4–7, 1984
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7947-4
  • Copyright © 1984 by ASME


The subject of this study is the simulation of low-frequency transients (such as acceleration, deceleration) of different open cycle gas turbine types. Special attention is paid to the correct calculation of the effects of heat transfer between process gas and solid structure. Correcting equations for these effects are developed and the transient properties of each component are then evolved from the static ones with these equations. It is shown that the heat transfer effects alter significantly the surge margin of the compressor. Simulation model includes intercooler and recuperation. The programming language is CSMP.

Copyright © 1984 by ASME
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