Abstract
Large Eddy Simulation (LES) of turbulent premixed combustion close to Lean Blow Out (LBO) in a gas turbine engine has been performed. Combustion near LBO is shown to occur in the broken reaction zone regime where classical flamelet assumption breaks down. A subgrid combustion model based on the linear-eddy mixing (LEM) model is implemented to simulate premixed combustion over a wide range of operational conditions, including combustion near LBO. Pollutant (CO and NO) formation is predicted using transport models and compared with data over a range of operating conditions. It is shown that inclusion of unburned hydrocarbons (UHC) due to local quenching is very important in the prediction of CO emission.KeywordsLarge-Eddy SimulationsBroken-Reaction-ZoneLean Blow OutLinear-Eddy-Mixingcombustion regimespollutants
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
