Comparative analysis of turboshaft engines thermodynamic cycles calculation

About the authors:

Andrei N. Aksyonov, Cand. Sci. (Phys-Math.), Laboratory Chief, Tyumenskie motorostroiteli; 9123975423@mail.ru

Kultyshev Alexey Yu., Cand. Sci. (Tech.), Deputy General Director — Technical Director, Gazprom Energoholding Industrial Assets; info@gehia.ru
Lyudmila A. Puldas, Cand. Sci. (Tech.), Associate Professor, Heatgas Supply and Ventilation Department, Industrial University of Tyumen; eLibrary AuthorID, puldasla@tyuiu.ru

Abstract:

A brief overview of domestic and foreign programs for calculating the thermodynamic cycle of the gas turbine engine operation is provided. The focus is on comparing GasTurb and Tyumen Motor Builders methods. Configuration files are provided for NASA Chemical Equilibrium with Applications program to calculate the thermodynamic properties of methane, air, and combustion products. The main provisions of the procedure for calculating thermal schemes of turboshaft engines are presented. Using the example of a three-shaft ship-type gas turbine engine UGT 15000, the potentials for increasing efficiency by 4-7% (abs.) and reducing CO2 emissions by 20% are shown due to the installation of an intercooler during compression of the working fluid. According to the results of comparison of GasTurb and Tyumen Motor Builders programs, the correspondence of the main parameters within the permissible measurement error is established. Based on published data on UGT 15000 (DG90), the parameters of the thermodynamic cycle were identified, including the polytropical efficiency of each node and cooling rates (ISO 2314). It has been shown that due to the isotermo-adiabatic cycle of V. V. Uvarov, already in the first approximation, without extreme parameters of the thermodynamic cycle, the characteristics of the V generation of the gas turbine engine can be implemented based on affordable and economical technologies of the II-IV generation (using equiaxed nickel superalloys, cyclone or convective-film cooling of high-pressure turbine vanes and blades). The Tyumen Motor Builders methodology program is open-source and has proven itself positively in the service-pack development for engines DG90/DN80/DU80 (III-IV generation) and the new ТМ16М2 engine construction.

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