Large eddy simulation of reacting jets in hot crossflow under atmospheric and gas turbine conditions

A numerical tool has been designed to describe an axially staged combustion process of a heavy duty gas turbine with means of LES. Two different combustion models have been coupled with the newly developed NOx model. A validation with experimental results from an atmospheric test rig reveals an excellent performance of the tool. A reduction of NOx due to mixing effects has been identified when simulating engine conditions of technical interest. Conducted investigations figured out that different jet geometries of the second stage and an elevation of the velocity magnitude can improve the mixing process.