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Open AccessArticle

Computational Simulation of PT6A Gas Turbine Engine Operating with Different Blends of Biodiesel—A Transient-Response Analysis

Universidad ECCI, Cra. 19 No. 49-20, Bogotá 111311, Colombia
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Energies 2019, 12(22), 4258; https://doi.org/10.3390/en12224258
Received: 17 September 2019 / Revised: 1 October 2019 / Accepted: 8 October 2019 / Published: 8 November 2019
(This article belongs to the Special Issue Small-Scale Energy Systems with Gas Turbines and Heat Pumps)
Instead of simplified steady-state models, with modern computers, one can solve the complete aero-thermodynamics happening in gas turbine engines. In the present article, we describe a mathematical model and numerical procedure to represent the transient response of a PT6A gas turbine engine operating at off-design conditions. The aero-thermal model consists of a set of algebraic and ordinary differential equations that arise from the application of the mass, linear momentum, angular momentum and energy balances in each engine’s component. The solution code has been developed in Matlab-Simulink® using a block-oriented approach. Transient simulations of the PT6A engine start-up have been carried out by changing the original Jet-A1 fuel with biodiesel blends. Time plots of the main thermodynamic variables are shown, especially those regarding the structural integrity of the burner. Numerical results have been validated against reported experimental measurements and GasTurb® simulations. The computer model has been capable to predict acceptable fuel blends, such that the real PT6A engine can be substituted to avoid the risk of damaging it. View Full-Text
Keywords: gas turbine engine; two-spool turboprop engine; PT6A engine; aero-thermal model; Matlab-Simulink; bio-diesel; start-up transient gas turbine engine; two-spool turboprop engine; PT6A engine; aero-thermal model; Matlab-Simulink; bio-diesel; start-up transient
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MDPI and ACS Style

Bayona-Roa, C.; Solís-Chaves, J.; Bonilla, J.; Rodriguez-Melendez, A.; Castellanos, D. Computational Simulation of PT6A Gas Turbine Engine Operating with Different Blends of Biodiesel—A Transient-Response Analysis. Energies 2019, 12, 4258.

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