Theoretical studies of variable geometry : hot section of the miniature jet engine

• Autorzy: Chmielewski M. , Fulara S. , Gieras M.

Identyfikatory

DOI

10.5604/12314005.1213559

• Języki publikacji: EN

Abstrakty

EN

The aim of this article is to present the results of theoretical studies regarding the use of variable geometry hot section of a miniature gas turbine. The variable geometry combustor and variable area nozzle concepts for GTM-120 miniature jet engine are presented in particular. Recent trends of propulsion system size reduction, low-emission combustion and improved fuel efficiency have been considered. A system of variable geometry combustor and variable area nozzle has been proposed as solution. The basic zero-dimensional analytical models for variable geometry combustor and variable area nozzle are developed. Chemkin based model shows significant NOX/CO emissions reduction and combustor outlet enthalpy increases with the use of variable geometry combustor chamber. The analytical model of the variable area nozzle has been proposed. It shows turbine effectiveness increase across its operating range by raising the compressor working line. As a result, noticeable turbine stage efficiency increase has been obtained. Finally, physical implications and future work plans regarding variable geometry hot section of miniature gas turbines are discussed.

Słowa kluczowe

EN

small gas turbine; variable geometry; combustor chamber; turbine nozzle; efficiency

• 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: 2016
• Tom: Vol. 23, No. 2
• Strony: 69--80
• Opis fizyczny: Bibliogr. 13 poz., rys.

Twórcy

autor

Chmielewski M.

• Warsaw University of Technology Institute of Heat Engineering Nowowiejska Street 21/25, 00-665 Warsaw, Poland tel.:[phone]

autor

Fulara S.

• Warsaw University of Technology Institute of Heat Engineering Nowowiejska Street 21/25, 00-665 Warsaw, Poland tel.:[phone]

autor

Gieras M.

• Warsaw University of Technology Institute of Heat Engineering Nowowiejska Street 21/25, 00-665 Warsaw, Poland tel.:[phone]

Bibliografia

• [1] Lefebvre, A. H., Ballal, D. R., Gas Turbine Combustion: Alternative Fuels and Emissions, CRC Press, Boca Raton, 2010.
• [2] Welsh, P., Fletcher, P., Gas Turbine Performance, Blackwell Science Ltd, Oxford 2004.
• [3] Kaddah, K. S., Discharge Coefficients and Jet Deflection Angles for Combustor Liner Air Entry Holes, College of Aeronautics MSc thesis, Cranfield, UK 1964.
• [4] Freeman, Β. C., Discharge Coefficients of Combustion Chamber Dilution Holes, College of Aeronautics MSc thesis, Cranfield, UK 1965.
• [5] Gieras, M., Stańkowski, T., Computational study of an aerodynamic flow through a micro-turbine engine combustor, Journal of Power Technologies 92 (2) pp. 68-79, Warsaw 2012.
• [6] Ślesik, D., Numeryczna symulacja aerodynamiki przepływu przez komorę spalania silnika GTM-120, Praca dyplomowa inżynierska, Warsaw 2011.
• [7] Chmielewski, M., Gieras, M., Small Gas Turbine GTM-120 Bench Testing with Emission Measurements, Journal of KONES, Vol. 22(1), 2015.
• [8] Strelkova, M. I., Kirillov, I. A., Potapkin, B. V., Safonov, A. A., Sukhanov, L. P., Umanskiy S. Ya. , Deminsky M. A., Dean A. J., Varatharajan B., Tentner A. M., Detailed and Reduced Mechanisms of Jet-A Combustion at High Temperatures, Combustion Science and Technology, Vol. 180: pp 1788-1802, 2008.
• [9] Smith, G. P., Golden, D. M., Frenklach, M., Moriarty, N. W., Eiteneer, B., Goldenberg, M., Bowman, C. T., Hanson, R. K., Song, S., Gardiner, W. C., Jr., Lissianski, V. V., Qin, Z., http://www.me.berkeley.edu/gri_mech/
• [10] Mattingly, J. D., W. H. Heiser, D. T. Pratt, Aircraft engine design, AIAA, Reston 2002.
• [11] Mattingly, J. D., Elements of propulsion: Gas turbines and rockets, AIAA, Reston 2006.
• [12] Szczeciński, S., Turbinowe napędy samochodowe, Wyd. Komunikacji i Łączności, Warsaw 1974.
• [13] Tuliszka, E., Turbiny cieplne, Wyd. Naukowo-techniczne, Warsaw 1973.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.