Gas turbine combustors are often subjected to combustion instabilities because of variability
of operating conditions, affecting components, and altering exhaust emissions. Herein, the
analysis focuses on simulating numerically the non‐premixed combustion as unsteady
flamelet combustion and detailed kinetic mechanism. The goal is analyzing exhaust gases
under unsteady inlet airflow conditions to define operation guidelines. The numerical
approach is validated using data from the literature for nonperturbed cases. Three periodical …

Gas-fueled turbines design and operation continues to attract the attention due to
technoeconomic reasons. Environmentally, goals like reducing emissions and noise have
forced to design more quiet and efficient combustion systems. However, the interaction of air
and fuel may happen under off-design conditions and may develop alterations on the
exhaust products. These conditions may be a function of time, like transient fluctuations of
inlet streams, not considered in original design, such as the case of pressure fluctuations of …