Parallel Computing Application on Combustion and Emission Analysis of an Annular Gas Turbine Combustor

Abstract

To analyze the emissions of a turbulent lean premixed Methane-air combustor, a level set Gequation method has been implemented in the Large Eddy Simulation (LES) framework using parallel personal server. The server consists of 36 nodes with 12 CPU cores a node. GRI-MECH 3.0 which is a compilation of 325 elementary chemical reactions with 53 species, has been used with Presumed-Probability Density Function (PDF) method. The combustion flames from each injector move extremely dynamically and rotate in different directions from adjacent injectors because the swirl directions of each injector are opposite to the adjacent injectors. CO has high concentration on the flame and disappears rapidly after the flame due to the lean premixed conditions. NO mole fraction increases continuously after the flame and then is emitted at the exit of combustor.