Modelling research of the characteristics of gasturbine axial compressor with changeable flow passage geometry

• Autorzy: Wirkowski P.
• Języki publikacji: EN

Abstrakty

EN

In real exploitational conditions marine gasturbine engine works at different rotation speeds determined by the required parameters of ship's movement. Conversion from one rotation speed to another is related to realization of unsteady energetic processes, determined by the gasodynamic mutual influence of compressor configurations. The values of working medium flow thermodynamic parameters undergo significant changes in time. To work out the qualitative and quantitative estimation of these changes it is necessary to define the dynamic equations, describing working medium flow through the gas passage of engine. In the next step it is necessary to resolve the defined equations for disturbances of steady cooperation of compressor configurations. This paper concerns the application of mathematical modelling methods to analyzing gas-dynamic processes in marine gas turbines. The influence of geometry changes in axial compressor flow passage on kinematical air flow characteristics is presented. The elaborated mathematical model will make it possible to realize - in the future -simulative investigations of gas-dynamic processes taking place in a compressor fitted with controllable guide vanes. Individual parametric features of every engine in service are identified by using expensive experimental tests, which are conditioned by many constructional and operational limitations. The dynamic development of computer technology, enables using it for numerical simulation of changeable technical state processes.

Słowa kluczowe

EN

gas turbine; axial compressor; variable stator vanes

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2011
• Tom: Vol. 18, No. 3
• Strony: 507--514
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Wirkowski P.

• Polish Naval Academy, Department of Mechanical and Electrical Engineering Smidowicza Street 69, 81-103 Gdynia, Poland tel.: [phone],

Bibliografia

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• [3] Świk, B., Szczeciński, S., Modelling the characteristics of radial compressor supercharging gas turbine engine, Biuletyn WAT, No. 3-4, Vol. XLIV, Warszawa 1995.
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• [5] Korczewski, Z., Wirkowski, P., Modelling gasodynamic processes within turbine engines’ compressors equipped with variable geometry of flow duct, IV International Scientifically-Technical Conference “Explo-Diesel & Gas Turbine ‘05”, pp. 227-236, Gdańsk 2005.
• [6] Muszyński, M., Orkisz, M., Modelling of gas turbine jet engines (in Polish). Published by Library of Institute of Aeronautics, Warszawa 1997.
• [7] Pieregudow, W., Least squares method and its application (in Polish). State Economical Publishers (PWE), Warszawa 1967.
• [8] Wirkowski, P., Influence of changes of axial compressor variable stator vanes setting on gas turbine engine work, V International Scientifically-Technical Conference POLISH CIMAC Explo-Diesel & Gas Turbine ‘07, pp. 511-518, Gdańsk 2007.
• [9] Wirkowski, P., Simulation of changes of gas turbine engine work parameters equipped with variable inlet stator vanes axial compressor, 12TH International Conference „Computer systems aided science, industry and transport”- TRANSCOMP 2008, Published by Radom University of Technology, pp. 591-596, Radom 2008.