2
Faculty of Mechanical Engineering, University of Tehran
3
Mechanical Engineering Department, Islamic Azad University Varamin Pishva Branch
Abstract
In this paper, the thermodynamic modeling and analysis of various components of a turboprop engine and their relation in the steady-state design and off-design performances are addressed. An algorithm is presented and a computer code is developed for the analysis of the cycle in design and off-design conditions. Then off-design performance curves are plotted for different turbine inlet temperatures, flight elevations and Mach numbers and their results are interpreted. The results are compared and validated with the results of GasTurb software. In addition, the effects of the combustion chamber defects on the performance of the engine are investigated. The results of this paper can be used as the first step in the study of the performance and upgrading of these engines. The results of this study show that the specific fuel consumption will rise by 14% for a 10% increase in the combustion chamber pressure drop. Furthermore, the specific fuel consumption increases by 13% and the engine power reduces by 17.5% for a 10% reduction in the combustion efficiency.
Saravanamuttoo, H.I. and Fawke, A.J. “Simulation of Gas Turbine Dynamic Performance”, American Society of Mechanical Engineers, New York, USA, 1970.##
Seldner, K., Mihaloew, J.R., and Blaha, R.J. “Generalized Simulation Technique for Turbojet Engine System Analysis”, National Aeronautics and Space Administration, Washington, USA, 1972.##
Walsh, P.P. and Fletcher, P. “Gas Turbine Performance”, John Wiley & Sons, India, 2004.##
Mattingly, J.D. “Elements of Gas Turbine Propulsion”, McGraw-Hill, India, 2005.##
Oates, G.C. “Aerothermodynamics of Gas Turbine and Rocket Propulsion”. American Institute of Aeronautics and Astronautics, Washington, USA, 1997.##
Hanachi, H. “Gas Turbine Engine Performance Estimation and Prediction”, PhD Dissertation, Carleton University, 2016.##
Lebele-Alawa, B.T. and Jo-Appah, V. “Thermodynamic Performance Analysis of a Gas Turbine in an Equatorial Rain Forest Environment”, J. Power Energy Eng., Vol. 3, No. 1, pp.11-23, 2015.##
Godoy, E., Benz, S.J., and Scenna, N.J. “A Strategy for the Economic Optimization of Combined Cycle Gas Turbine Power Plants by Taking Advantage of Useful Thermodynamic Relationships”, Therm. Eng., Vol. 31, No. 5, pp.852-871, 2011.##
Pourfatemi, S.M. and Ahmadi, R. “Thermo-Economic Analysis with Reliability Consideration of a Hybrid System of Gas Turbine, SOFC and Multiple Effect Desalination”, Modares Mech. Eng., Vol. 17, No. 10, pp. 321-332, 2017. (In Persian)##
Ghaffari, A., Akhgari, R., and Abbasi, E., “Modeling and Simulation of MGT70 Gas Turbine Start-up Procedure”, Amirkabir J. Mech. Eng., Vol. 49, No. 2, pp.129-132, 2017. (In Persian)##
Soon L.A., “Two-Combustor Engine for Military Applications”, PhD Dissertation, Cranfield University, 2009.##
Van Den Hout F., “Gas Turbine Performance Simulation Improvements to the TURBOMATCH Scheme”, M.Sc. Thesis, Cranfield university, 1991.##
Sirinoglou, A.A. “Implementation of Variable Geometry for Gas Turbine Performance Simulation TURBOMATCH Improvement”, M.Sc. Thesis, Cranfield university, 1992.##
Balli, O. and Hepbasli, A. “Energetic and Exergetic Analyses of T56 Turboprop Engine”, Energy Convers. Manage., Vol. 73, pp. 106-120, 2013.
Crosa, G., Pittaluga, F., Trucco, A. Beltrami, F., Torelli, A., and Traverso, F., “Heavy-duty Gas Turbine Plant Aerothermodynamics Simulation Using Simulink”, Eng. Gas Turbines Power, Vol. 120, No. 3, pp. 550-556, 1998.##
Farokhi, S. “Aircraft Propulsion”, John Wiley & Sons, New Delhi, India, 2014.##
Kerrebrock, J.L. “Aircraft Engines and Gas Turbines”, MIT Press, Cambridge, UK, 1992.##
Sonntag, R.E., Borgnakke, C., and Van Wylen, G.J. “Fundamentals of Thermodynamics”, John Wiley & Sons, USA, 2003.##
Zhu, P. and Saravanamutto, H.I. “Simulation of an Advanced Twin-spool Industrial Gas Turbine”, J. Eng. Gas Turbines Power, Vol. 114, No. 2, pp.180-185, 1992.##
McIntire, W.L. “A New Generation T56 Turboprop Engine”, Proc. Int. Gas Turbine Conf. Exhibit., Amsterdam, Netherlands, 1984.##
Mazidi Sharafabadi, M., Vaezi, S.M., and Norouzi, E. “Performance and Emission Analysis of Combustion Chamber of a Turboprop Engine at Different Operation Regimes” Sci. J. Fluid Mech. Aerodyn. Vol. 4, No. 1, pp.65-75, 2015. (In Persian)##
Mazidi Sharfabadi, M., Seraj, A., & Kahd Narouei, M. E. (2021). A Turboprop Engine Modeling in the Design and Off-Design Conditions to Investigate the Effect of Combustion Chamber Defects on its Performance. Fluid Mechanics & Aerodynamics, 10(1), 99-114.
MLA
Mohammad Mazidi Sharfabadi; Ali Seraj; Mohammad Ebrahim Kahd Narouei. "A Turboprop Engine Modeling in the Design and Off-Design Conditions to Investigate the Effect of Combustion Chamber Defects on its Performance", Fluid Mechanics & Aerodynamics, 10, 1, 2021, 99-114.
HARVARD
Mazidi Sharfabadi, M., Seraj, A., Kahd Narouei, M. E. (2021). 'A Turboprop Engine Modeling in the Design and Off-Design Conditions to Investigate the Effect of Combustion Chamber Defects on its Performance', Fluid Mechanics & Aerodynamics, 10(1), pp. 99-114.
VANCOUVER
Mazidi Sharfabadi, M., Seraj, A., Kahd Narouei, M. E. A Turboprop Engine Modeling in the Design and Off-Design Conditions to Investigate the Effect of Combustion Chamber Defects on its Performance. Fluid Mechanics & Aerodynamics, 2021; 10(1): 99-114.
)
