Vauquelin P., Cakir B.O., Fureby C., Bai X.-S., Richter M., Subash A.A., Prakash M. & Sanned D.; 2024, “Numerical Investigation of the Fuel Flexibility of a Typical Aero Engine Swirl Stabilized Flame”, 19th Int Conf. on Num. Comb. Kyoto, Japan. (https://www.combustionsociety.jp/nc24/)
Abstract: In science and industry, swirling flows are found in a wide range of applications. In combustion, it is commonly used to stabilize a flame. It maintains its ignition by recirculating the burnt gases with the incoming fresh air and fuel. Depending on the swirl intensity, residence times may vary in the hot areas and thus, it tends to limit NOX formation. In the context of reducing emissions of aviation gas turbine engines, various sustainable aviation fuels are being developed with the aim of keeping the existing infrastructure unchanged. Thus, considering the variety of fuel alternatives for aeroengines being increased, there exists a clear demand for characterization of the fuel behavior and flame interactions with the highly turbulent flows found inside such combustion chambers. The Triple Annular Research Swirler (TARS) burner, that mimics aeroengines combustors, has been previously employed for experimentally studying non-reactive and reactive flows dynamics in open and confined combustion chamber conditions. Here, combustion Large Eddy Simulations are used to investigate the combustion dynamics of kerosene-based liquid jet fuels such as Jet A but also test fuels such as C1 and C5. The simulation results are analyzed in comparison with the experimental data acquired during the measurement campaigns, which includes OH* chemiluminescence, OH* planar laser induced fluorescence (PLIF) and particle image velocimetry (PIV).
