32th Congress of the International Council of the Aeronautical Sciences

05 - Propulsion

LARGE-EDDY SIMULATION OF A SWIRLING AVIATION KEROSENE SPRAY FLAME USING 3-COMPONENT SURROGATE FUELS

K.D. Wan¹, Y.Z. Huang¹, Z.X. Gao¹, Y. He, Zhejiang University, China; C.W. Jiang¹; ¹Ningbo Institute of Technology, Beihang University, China

As a high-fidelity simulation technique, large-eddy simulation (LES) is an important numerical approach to investigate the complex phenomena inside the aviation engine combustors including atomization of fuel jets, beak-up of fuel droplets, evaporation, and turbulent mixing of fuel and air. The present paper describes a coupling method of flamelet generated manifold (FGM) chemistry table built with 3-component surrogate kerosene skeletal mechanism and the artificial thickened flame (ATF) model under the LES framework. The complex chemical kinetic effects of kerosene combustion can then be accounted in LES with a minor computational cost. A swirling-stabilized aviation kerosene burner configuration is investigated with the proposed approach and encouraging results are obtained. The interactions between the partially premixed flame and the evaporating droplets are well predicted by the LES simulation.


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