Thermo-physical properties for surrogate models of aviation kerosene

Based on the liquid-phase product analysis of aviation kerosene RP-3, three kinds of surrogate models, including single-specie, three-species and 13-species surrogate were proposed. The investigations covered the temperatures ranged from 300 to 1000K under the pressures from 1 to 15MPa. The distributions of the four thermo-physical properties were calculated under supercritical pressure conditions with temperature rise and decrease in density, viscosity and thermal conductivity, as well as specific heat increase. Drastic changes of thermo-physical properties occurred near the pseudo-critical temperature, especially for the specific heat under the pressure of 3MPa. The variation in pressure will change critical temperature location and has a certain influence on distributions of density and thermal conductivity, as well as the peak value of specific heat. The heat sink of RP-3 calculated from the three-species surrogate is in good agreement with the experiments.