Experimental Validated Combustion Kinetic Model and Surrogate for a Bio-Derived Jet Fuel

This paper proposes and tests a combustion chemistry reaction mechanism model for sustainable aviation fuel HEFA-SPK, while providing a detailed description to the methodology employed in modeling high-temperature combustion chemistry. The reaction kinetic model comprises a total of 119 species and 841 reactions. The model validation was conducted for ignition delay time, laminar flame speed, and fuel pyrolysis data. The results modeling shows generally good agreement with experimental data. The average error is approximately 15% for ignition delay, 10% for flame speed, and 10% for pyrolysis yields of methane and ethylene at 6 atm pressure. Additionally, a fuel surrogate for HEFA-SPK is formulated, which considering multiple properties such as density, viscosity, heat capacity, distillation curve, heating value, and average molecular weight. The associated thermodynamic data of HEFA-SPK is also derived from the surrogate.