Gaz Türbinli Uçak Motorlarının Termodinamik Modellenmesi

Öz

Bu çalışmada, uçak motorlarında kullanılmakta olan bir gaz türbinli motorun termodinamik bağıntılar yardımıyla modellenmesi ve irdelenmesinde kullanılacak yöntem açıklanmıştır. Gaz türbinli motor, bileşenlere ayrılmış ve her bir bileşen termodinamiğin birinci ve ikinci yasalarıyla değerlendirilmiştir. Bu çalışmada ortaya konulan yöntem; ileride yapılabilecek turbojet, turboprop ve turbofan tipi gaz türbinli uçak motorlarının termodinamik analiz çalışmalarına temel oluşturacak ve ulusal literatüre kazandırılmış olacaktır.

Anahtar Kelimeler

• Gaz türbini, uçak motoru, ekserji, termodinamik

Thermodynamic Modeling of Gas Turbine Aero-Engines

Öz

In this study, a methodology for thermodynamic modeling and assessment of gas turbine engines operating on aircrafts is introduced. Gas turbine engine is analyzed for components separately and each component is evaluated on the basis of first and second laws of thermodynamics. Methodology which is expressed in this paper can provide a basis for thermodynamic analysis of turbojet, turboprop and turbofan engines in the future. On the other hand, methodology for thermodynamic evaluation of gas turbine aero-engines is added to national literature by this study. For better understanding of the methodology, a simple gas turbine engine assessed; exergy efficiencies of compressor, combustion chamber and turbine are found to be 89.72%, 70.85% and 93.01% respectively.

Anahtar Kelimeler

• Gas turbine, aircraft engine, aircraft, exergy, thermodynamics

Kaynakça

1. Dincer, I., Rosen, M. A., Exergy: Energy, Environment and Sustainable Development, Elsevier, 2012.
2. Cengel, Y.A., Wood, B., Dincer, I., “Is bigger thermodynamically better?”, Exergy An International Journal, vol. 2, pp. 62-68, 2002.
3. Tsatsaronis, G., “Definitions and nomenclature in exergy analysis and exergoeconomics”, Energy, vol. 32, pp. 249-253, 2007.
4. Dincer, I., “The Role of Exergy in Energy Policy Making”, Energy Policy, vol. 30, pp. 137-149, 2002.
5. Utlu, Z., Hepbasli, A., “Assessment of the energy utilization efficiency in the Turkish transportation sector between 2000 and 2020 using energy and exergy analysis method”, Energy Policy, vol. 34, pp. 1611-1618, 2006.
6. Bejan, A., Siems D.L. “The need for exergy analysis and thermodynamic optimization in aircraft development”, Exergy, An International Journal, vol. 1, pp. 14-24, 2001.
7. Turan, O., “Exergetic effects of some design parameters on the small turbojet engine for unmanned air vehicle applications”, Energy, vol. 46, pp. 51-61, 2012. 11,234 ile 100 İy Kompresör Yanma odası Türbin
8. Gaz Türbinli Motor Bileşeni Kompresör Yanma odası Türbin