Title: Application of reactor net models for the simulation of gas-turbine combustor emissions

Authors: Alexander M. Starik; Vycheslav E. Kozlov; Alexander B. Lebedev; Nataliya S. Titova

Addresses: Central Institute of Aviation Motors, Scientific Educational Center Physical and Chemical Kinetics and Combustion, Aviamotornaya st. 2, Moscow, 111116, Russia ' Central Institute of Aviation Motors, Scientific Educational Center Physical and Chemical Kinetics and Combustion, Aviamotornaya st. 2, Moscow, 111116, Russia ' Central Institute of Aviation Motors, Scientific Educational Center Physical and Chemical Kinetics and Combustion, Aviamotornaya st. 2, Moscow, 111116, Russia ' Central Institute of Aviation Motors, Scientific Educational Center Physical and Chemical Kinetics and Combustion, Aviamotornaya st. 2, Moscow, 111116, Russia

Abstract: The work deals with the evaluation of applicability of reactor net models and different reaction mechanisms for the predictions of emission characteristics of aero-engine combustors operating both in diffusion and in homogeneous burning modes. It is shown that the accuracy of the calculations of emission indices for NO_x, CO and unburned hydrocarbons (UHC) is dependent strongly on the applied reaction mechanisms. The computations exhibited that for the combustor operating in a diffusion mode the use of methane as a fuel, instead of kerosene, leads to decreasing NO_x (by 35%) emission index, as well as to decreasing the CO and UHC emissions, while for the combustor with homogeneous combustion of fuel-lean mixture the use of methane as a fuel results in an increase of EINO_x value (by a factor of 1.4) compared with kerosene-fuelled combustor.

Keywords: pollutant emissions; aero engine combustors; detailed reaction mechanisms; reactor net models; simulation; gas turbines; engine emissions; aircraft engines; aeropspace industry; NOx emissions; nitrogen oxides; carbon emissions; unburned hydrocarbons; UHC emissions; methane; air pollution.

DOI: 10.1504/IJSA.2014.062867

International Journal of Sustainable Aviation, 2014 Vol.1 No.1, pp.43 - 57

Received: 08 Mar 2013
Accepted: 24 May 2013
Published online: 19 Jul 2014 *

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