Radiative heat transfer in a model gas turbine combustor

Abstract

In this paper we have carried out a three-dimensional numerical study to investigate the radiative heat transfer in a model gas turbine combustor, representative of the Rolls-Royce Tay combustor. The Discrete Ordinate Method (DOM/Sn) in general body-fitted co-ordinate system is applied to solve the filtered Radiative Transfer Equation (RTE) for the radiation modelling and this has been combined with a Large Eddy Simulation (LES) of the flow, temperature and composition fields within the combustion chamber. The radiation considered in this work is due only to the hot combustion gases notably carbon dioxide (CO2) and water vapour (H2O) also known as non-luminous radiation. The instantaneous results of the radiation properties such as the incident radiation and the radiative energy source or sink as the divergence of the radiative heat fluxes are computed inside the combustion chamber and presented graphically. © 2006 WIT Press.