CO pollutant Prediction of a Stationary Gas Turbine Combustor Using Finite Rate Eddy Dissipation Combustion Model

The main objective of the present paper is to predict CO emission in a stationary gas turbine combustor. The gas turbine combustor comprises 18 EV burners. To such aim, k-ϵ turbulent model along with finite rate eddy dissipation combustion model and a global two step kinetic mechanism are used to simulate the combustor flow field. Primary investigations show that the global two step mechanism underestimates CO pollutant at the combustor outlet by several orders of magnitude. Therefore, the global mechanism is tuned to capture CO pollutant. To such aim, temperature exponent of the Arrhenius form of reaction rate is tuned as a function of equivalence ratio. Investigations show that the tuned global mechanism using the present methodology accurately predicts CO emission in the stationary gas turbine at various operating conditions. The obtained results show that modifications of the global mechanism have no effect on the overall flame shape and flame lift-off distance.