Mathematical modeling of an axial compressor in a gas turbine cycle

  • Marcin Plis Institute of Thermal Technology Silesian University of Technology Konarski st. 18, 44-100, Gliwice, Poland
  • Henryk Rusinowski Institute of Thermal Technology Silesian University of Technology Konarski st. 18, 44-100, Gliwice, Poland

Abstract

Contemporary thermal diagnostic systems of power units require advanced computational tools, including mathematical models.These models should have a simple structure and short computing time. These conditions are satisfied by models thatinclude mass and energy balances as well as additional empirical functions whose coefficients are estimated by using themeasurement results. This paper presents a simulation model of an axial compressor which forms part of a gas turbineunit with a rated output of 125.4 MW. The model was developed with the use of a generalized compressor map, describingthe relationship between corrected air mass flow rate, pressure ratio, isentropic efficiency and corrected rotational speed.The model encompasses the empirical formula for compressor internal efficiency, which additionally considers the effect ofvariation of the angle of inlet guide vanes. The unknown values of empirical coefficients which appear in this equation wereestimated on the basis of operating data. The calculation results obtained were compared with the measurement results. Thequality of the model prediction was evaluated and conclusions were drawn.

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Published
2016-10-29
How to Cite
PLIS, Marcin; RUSINOWSKI, Henryk. Mathematical modeling of an axial compressor in a gas turbine cycle. Journal of Power Technologies, [S.l.], v. 96, n. 3, p. 194--199, oct. 2016. ISSN 2083-4195. Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/951>. Date accessed: 02 aug. 2021.
Section
Energy from Gas 2016 Conference

Keywords

Mathematical modelling, Gas turbine, Axial compressor, Empirical functions, Inlet guide vanes of compressor

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